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<!-- Automatically generated by emacsconf-publish-after-page -->
<a name="color-mainVideo-transcript"></a>
# Transcript
[[!template new="1" text="""Introduction""" start="00:00:00.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""Hi, EmacsConf. This is "Colour your Emacs with ease".""" start="00:00:00.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""I'm Ryota Sawada, and today's agenda is:""" start="00:00:11.328" video="mainVideo-color" id="subtitle"]]
[[!template text="""start with a brief introduction.""" start="00:00:14.849" video="mainVideo-color" id="subtitle"]]
[[!template text="""I will be talking about colours quite a bit.""" start="00:00:16.650" video="mainVideo-color" id="subtitle"]]
[[!template text="""What colours do you like?""" start="00:00:19.720" video="mainVideo-color" id="subtitle"]]
[[!template text="""Colour spaces and some packages such""" start="00:00:21.453" video="mainVideo-color" id="subtitle"]]
[[!template text="""as color.el, ct.el. I'll be touching on a theme called""" start="00:00:23.600" video="mainVideo-color" id="subtitle"]]
[[!template text="""Hasliberg theme, which I created,""" start="00:00:27.880" video="mainVideo-color" id="subtitle"]]
[[!template text="""before wrapping up the talk.""" start="00:00:31.057" video="mainVideo-color" id="subtitle"]]
[[!template text="""A quick introduction about the talk. The slide is""" start="00:00:34.140" video="mainVideo-color" id="subtitle"]]
[[!template text="""available as an Org mode file at Codeberg. If you're""" start="00:00:36.960" video="mainVideo-color" id="subtitle"]]
[[!template text="""looking at it from Org mode, you probably want to have""" start="00:00:40.560" video="mainVideo-color" id="subtitle"]]
[[!template text="""rainbow mode turned on for the best viewing. This is the""" start="00:00:43.520" video="mainVideo-color" id="subtitle"]]
[[!template text="""case with the presentation today. I'm Ryota Sawada and I'm""" start="00:00:47.640" video="mainVideo-color" id="subtitle"]]
[[!template text="""available at rytswd at usual places.""" start="00:00:52.560" video="mainVideo-color" id="subtitle"]]
[[!template new="1" text="""What colour do you like?""" start="00:00:58.668" video="mainVideo-color" id="subtitle"]]
[[!template text="""What colour do you like?""" start="00:00:58.668" video="mainVideo-color" id="subtitle"]]
[[!template text="""You might be able to tell I like orange. That's""" start="00:01:01.291" video="mainVideo-color" id="subtitle"]]
[[!template text="""the colour that I use often.""" start="00:01:05.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""Emacs gives me all the control I want,""" start="00:01:07.857" video="mainVideo-color" id="subtitle"]]
[[!template text="""so naturally I wanted to make it aesthetically""" start="00:01:09.959" video="mainVideo-color" id="subtitle"]]
[[!template text="""pleasing to my taste, which meant that""" start="00:01:13.120" video="mainVideo-color" id="subtitle"]]
[[!template text="""I would like to have a dark theme, subtle theme""" start="00:01:16.024" video="mainVideo-color" id="subtitle"]]
[[!template text="""with orange as a main accent colour, but not""" start="00:01:19.726" video="mainVideo-color" id="subtitle"]]
[[!template text="""too orange, so not everything very orange.""" start="00:01:23.768" video="mainVideo-color" id="subtitle"]]
[[!template text="""Maybe use another blue-ish colour""" start="00:01:26.804" video="mainVideo-color" id="subtitle"]]
[[!template text="""as another accent. Note that this presentation is""" start="00:01:29.674" video="mainVideo-color" id="subtitle"]]
[[!template text="""based on the Hasliberg theme, more on that""" start="00:01:32.930" video="mainVideo-color" id="subtitle"]]
[[!template text="""later. But when I started my Emacs journey, I didn't start""" start="00:01:36.200" video="mainVideo-color" id="subtitle"]]
[[!template text="""with creating a new theme from get-go. I started with a theme""" start="00:01:40.600" video="mainVideo-color" id="subtitle"]]
[[!template text="""called Nova Theme. I really liked it. I made a few tweaks""" start="00:01:45.200" video="mainVideo-color" id="subtitle"]]
[[!template text="""around Org Mode and headings, so that they were a bit more was""" start="00:01:49.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""my liking, which was around orange being sprinkled across.""" start="00:01:55.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""I got to it very nice looking and I really liked it, but when""" start="00:02:00.760" video="mainVideo-color" id="subtitle"]]
[[!template text="""I started a lot of coding tasks with it, I realized one""" start="00:02:07.960" video="mainVideo-color" id="subtitle"]]
[[!template text="""thing: that it was very colourful, and in a way, distracting.""" start="00:02:13.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""it actually wasn't about Nova Theme's fault. It was just""" start="00:02:19.800" video="mainVideo-color" id="subtitle"]]
[[!template text="""many editors, including Emacs and VS Code and other editors""" start="00:02:24.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""and modern themes, are filled with colours. Let's have a""" start="00:02:27.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""look. At the top left, you can see Nova theme with a bit of a""" start="00:02:31.680" video="mainVideo-color" id="subtitle"]]
[[!template text="""pale greenish background with a few colours. Purple,""" start="00:02:38.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""pink, blue, green. You can see some colours like that with""" start="00:02:42.240" video="mainVideo-color" id="subtitle"]]
[[!template text="""Nova theme. Nice looking colours, but still colourful. Modus""" start="00:02:47.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""Vivendi Tinted, bottom left, is also very nice looking""" start="00:02:51.520" video="mainVideo-color" id="subtitle"]]
[[!template text="""modern theme, but quite colourful. The same can be said""" start="00:02:56.080" video="mainVideo-color" id="subtitle"]]
[[!template text="""for ef-themes, owl edition at top right,""" start="00:02:59.361" video="mainVideo-color" id="subtitle"]]
[[!template text="""and Doom Noe as another, bottom right.""" start="00:03:03.135" video="mainVideo-color" id="subtitle"]]
[[!template text="""That led me to think: how can I make my code editing""" start="00:03:07.980" video="mainVideo-color" id="subtitle"]]
[[!template text="""and coding tasks not too distracting, and I can focus on""" start="00:03:13.760" video="mainVideo-color" id="subtitle"]]
[[!template text="""writing code. That was something I could manage with Org""" start="00:03:18.600" video="mainVideo-color" id="subtitle"]]
[[!template text="""Mode, where I just specifically, basically used orange""" start="00:03:22.760" video="mainVideo-color" id="subtitle"]]
[[!template text="""shades and not too much more. That's what you're seeing at""" start="00:03:26.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""the moment. I wanted to do something similar with coding""" start="00:03:29.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""and any general code. That led me to the journey of""" start="00:03:33.520" video="mainVideo-color" id="subtitle"]]
[[!template text="""creating my own theme.""" start="00:03:37.960" video="mainVideo-color" id="subtitle"]]
[[!template new="1" text="""Colour spaces: HSL, LCH , and more""" start="00:03:42.120" video="mainVideo-color" id="subtitle"]]
[[!template text="""But before going to the theme, I need to talk about colour""" start="00:03:42.120" video="mainVideo-color" id="subtitle"]]
[[!template text="""spaces. sRGB, standard RGB, is probably something that""" start="00:03:44.680" video="mainVideo-color" id="subtitle"]]
[[!template text="""many people are familiar with. HSL is for hue, saturation,""" start="00:03:49.080" video="mainVideo-color" id="subtitle"]]
[[!template text="""lightness. LCH is for luminance or lightness, chroma, and""" start="00:03:53.440" video="mainVideo-color" id="subtitle"]]
[[!template text="""hue. Those are the colour spaces probably common used in""" start="00:03:58.360" video="mainVideo-color" id="subtitle"]]
[[!template text="""various spaces, but when it comes to perceptual uniformity,""" start="00:04:03.320" video="mainVideo-color" id="subtitle"]]
[[!template text="""there is an important difference between the colour""" start="00:04:08.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""spaces. Human perception of colour is not very""" start="00:04:11.600" video="mainVideo-color" id="subtitle"]]
[[!template text="""straightforward. We can see in the reference here...""" start="00:04:14.800" video="mainVideo-color" id="subtitle"]]
[[!template text="""Let's have a look.""" start="00:04:17.880" video="mainVideo-color" id="subtitle"]]
[[!template text="""At the top you can see the shade coming from left""" start="00:04:19.507" video="mainVideo-color" id="subtitle"]]
[[!template text="""green to the right blue,""" start="00:04:23.160" video="mainVideo-color" id="subtitle"]]
[[!template text="""and in the top image, you can see half of""" start="00:04:26.371" video="mainVideo-color" id="subtitle"]]
[[!template text="""it, perhaps, is very similar green colour""" start="00:04:30.960" video="mainVideo-color" id="subtitle"]]
[[!template text="""and then when it comes to blue,""" start="00:04:34.521" video="mainVideo-color" id="subtitle"]]
[[!template text="""you can see more of the different colour gradients""" start="00:04:36.142" video="mainVideo-color" id="subtitle"]]
[[!template text="""coming into play. The bottom colour space is based on a""" start="00:04:40.240" video="mainVideo-color" id="subtitle"]]
[[!template text="""perceptually uniform colour space, which gives us a bit more""" start="00:04:45.560" video="mainVideo-color" id="subtitle"]]
[[!template text="""evenly distributed colour gradient, which will be""" start="00:04:50.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""something more suitable for deciding on the theme setup and""" start="00:04:55.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""the colour setup, where you can have various themes that are""" start="00:04:59.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""defined for human perceptions.""" start="00:05:04.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""Perceptual uniformity is important. For that, it is""" start="00:05:10.440" video="mainVideo-color" id="subtitle"]]
[[!template text="""important to mention about CIE, or "International""" start="00:05:14.320" video="mainVideo-color" id="subtitle"]]
[[!template text="""Commission of Illumination" in English. They created""" start="00:05:17.880" video="mainVideo-color" id="subtitle"]]
[[!template text="""important colour spaces called CIE XYZ which was from 1931,""" start="00:05:23.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""CIELAB, and LUV, 1976,""" start="00:05:29.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""respectively. Those are the colour spaces used in various""" start="00:05:33.320" video="mainVideo-color" id="subtitle"]]
[[!template text="""fields and industries and still relevant. There is a""" start="00:05:37.520" video="mainVideo-color" id="subtitle"]]
[[!template text="""quite a bit that you can read up on.""" start="00:05:41.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""I'm not a colour expert so have some references here,""" start="00:05:44.899" video="mainVideo-color" id="subtitle"]]
[[!template text="""but the TLDR of all of that is""" start="00:05:48.961" video="mainVideo-color" id="subtitle"]]
[[!template text="""consider using LCH variants over RGB or HSL""" start="00:05:52.520" video="mainVideo-color" id="subtitle"]]
[[!template text="""for better perceptual uniformity.""" start="00:05:57.526" video="mainVideo-color" id="subtitle"]]
[[!template text="""Specifically CIE Lab-based LCH,""" start="00:06:00.607" video="mainVideo-color" id="subtitle"]]
[[!template text="""which is often called Lab LCH""" start="00:06:03.960" video="mainVideo-color" id="subtitle"]]
[[!template text="""or just LCH. CIELUV-based LCH""" start="00:06:06.710" video="mainVideo-color" id="subtitle"]]
[[!template text="""is called LUV LCH. There is a new rather modern LCH setup""" start="00:06:10.360" video="mainVideo-color" id="subtitle"]]
[[!template text="""called OK LCH which is based on OK Lab.""" start="00:06:16.520" video="mainVideo-color" id="subtitle"]]
[[!template text="""So those are the colour spaces""" start="00:06:19.997" video="mainVideo-color" id="subtitle"]]
[[!template text="""that are worth looking at when it comes to creating""" start="00:06:22.100" video="mainVideo-color" id="subtitle"]]
[[!template text="""shades.""" start="00:06:24.280" video="mainVideo-color" id="subtitle"]]
[[!template new="1" text="""color.el and ct.el""" start="00:06:25.885" video="mainVideo-color" id="subtitle"]]
[[!template text="""How do you create shades? Color.el and ct.el are""" start="00:06:25.885" video="mainVideo-color" id="subtitle"]]
[[!template text="""great solutions. You can create shades and different""" start="00:06:29.760" video="mainVideo-color" id="subtitle"]]
[[!template text="""colours based on RGB and hex. You can see in the red example""" start="00:06:33.200" video="mainVideo-color" id="subtitle"]]
[[!template text="""here, FF0000 is a bright red. You can darken it by providing""" start="00:06:37.800" video="mainVideo-color" id="subtitle"]]
[[!template text="""less red values like CC or 88. You can see that the colours""" start="00:06:43.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""are slightly darker than the FF0000. But what if you are""" start="00:06:48.640" video="mainVideo-color" id="subtitle"]]
[[!template text="""working with the complex colours such as FBB151, this""" start="00:06:52.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""particular orange? That's where color.el, ct.el come""" start="00:06:57.440" video="mainVideo-color" id="subtitle"]]
[[!template text="""into play. Color.el is a built-in package in Emacs,""" start="00:07:01.880" video="mainVideo-color" id="subtitle"]]
[[!template text="""so you can use it by just requiring it.""" start="00:07:05.744" video="mainVideo-color" id="subtitle"]]
[[!template text="""color-darken-name and""" start="00:07:08.341" video="mainVideo-color" id="subtitle"]]
[[!template text="""providing the colour with the hex value with 40%""" start="00:07:10.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""gives you a darker orange""" start="00:07:13.906" video="mainVideo-color" id="subtitle"]]
[[!template text="""without doing too much of a colour computation""" start="00:07:16.887" video="mainVideo-color" id="subtitle"]]
[[!template text="""by hand. This hex value is something that Emacs""" start="00:07:20.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""understands and rainbow mode does as well. When it comes""" start="00:07:23.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""to ct.el, it's not a built-in solution, but it's more""" start="00:07:27.320" video="mainVideo-color" id="subtitle"]]
[[!template text="""versatile. It works with various colour spaces so you can""" start="00:07:30.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""see that ct-edit-hsl-l-dec by 40% would give""" start="00:07:34.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""us a darker colour by 40%. We can also use LCH variant which""" start="00:07:41.240" video="mainVideo-color" id="subtitle"]]
[[!template text="""can use the LCH colour spaces for darkening the colour. This""" start="00:07:47.760" video="mainVideo-color" id="subtitle"]]
[[!template text="""results in slightly different colours for this particular""" start="00:07:53.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""orange, but if you're working with the green or blue or some""" start="00:07:56.920" video="mainVideo-color" id="subtitle"]]
[[!template text="""other colours, it might be worth looking at LCH variant""" start="00:08:00.200" video="mainVideo-color" id="subtitle"]]
[[!template text="""rather than other colour spaces.""" start="00:08:04.178" video="mainVideo-color" id="subtitle"]]
[[!template new="1" text="""Hasliberg theme""" start="00:08:08.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""With that, let's have a look at Hasliberg theme.""" start="00:08:08.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""This is a theme that I created personally""" start="00:08:11.204" video="mainVideo-color" id="subtitle"]]
[[!template text="""and the name is based on the Swiss Alps""" start="00:08:13.708" video="mainVideo-color" id="subtitle"]]
[[!template text="""and with the following ideas in mind. It focuses""" start="00:08:16.410" video="mainVideo-color" id="subtitle"]]
[[!template text="""on setting up shades. Shades, by that...""" start="00:08:20.480" video="mainVideo-color" id="subtitle"]]
[[!template text="""You can see how the top""" start="00:08:25.032" video="mainVideo-color" id="subtitle"]]
[[!template text="""of the heading here is a bright orange colour, and""" start="00:08:27.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""other orange colours, this heading and this heading""" start="00:08:31.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""are based on the top""" start="00:08:35.759" video="mainVideo-color" id="subtitle"]]
[[!template text="""orange colour and then giving some shade and the luminance""" start="00:08:37.720" video="mainVideo-color" id="subtitle"]]
[[!template text="""adjustment essentially. It follows a pattern from web""" start="00:08:40.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""design and tailwind colour shades are a great example that""" start="00:08:44.640" video="mainVideo-color" id="subtitle"]]
[[!template text="""you can have a look.""" start="00:08:49.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""It does not use ct.el as it aims to be fully""" start="00:08:50.816" video="mainVideo-color" id="subtitle"]]
[[!template text="""dependency free and does not consider colour contrast for""" start="00:08:54.440" video="mainVideo-color" id="subtitle"]]
[[!template text="""accessibility. This is because it's personal and I""" start="00:08:58.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""don't have that particular need.""" start="00:09:02.120" video="mainVideo-color" id="subtitle"]]
[[!template text="""This is based on LuvLCh rather""" start="00:09:04.747" video="mainVideo-color" id="subtitle"]]
[[!template text="""than LAB LCH, and that's another reason""" start="00:09:06.840" video="mainVideo-color" id="subtitle"]]
[[!template text="""why I didn't use ct.el,""" start="00:09:08.789" video="mainVideo-color" id="subtitle"]]
[[!template text="""and it is highly experimental. But the code is""" start="00:09:11.050" video="mainVideo-color" id="subtitle"]]
[[!template text="""available at Codeberg and GitHub just for your reference.""" start="00:09:14.120" video="mainVideo-color" id="subtitle"]]
[[!template text="""Let's see Hasliberg theme in action. This is the theme""" start="00:09:18.280" video="mainVideo-color" id="subtitle"]]
[[!template text="""that we were looking at for org-mode as well, but for the""" start="00:09:23.720" video="mainVideo-color" id="subtitle"]]
[[!template text="""code, in this case Elisp. You can see that the colour is""" start="00:09:27.160" video="mainVideo-color" id="subtitle"]]
[[!template text="""mostly white and blue with orange sprinkled across for""" start="00:09:32.200" video="mainVideo-color" id="subtitle"]]
[[!template text="""string input. You can see some pink showing up as well.""" start="00:09:37.560" video="mainVideo-color" id="subtitle"]]
[[!template text="""Essentially, all the colour setup is done by shades, so most of""" start="00:09:41.560" video="mainVideo-color" id="subtitle"]]
[[!template text="""it is based on white or neutral, and there will be lighter and""" start="00:09:46.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""darker variants that can be set for the primary colour of blue.""" start="00:09:51.320" video="mainVideo-color" id="subtitle"]]
[[!template text="""You can see the darker and brighter and lighter colours""" start="00:09:56.160" video="mainVideo-color" id="subtitle"]]
[[!template text="""being used. With that shade setup, I only have to provide a""" start="00:09:59.960" video="mainVideo-color" id="subtitle"]]
[[!template text="""few colours as the base colours. From there, I can define the""" start="00:10:05.280" video="mainVideo-color" id="subtitle"]]
[[!template text="""shades for the theme setup, which leads to creating a more""" start="00:10:09.600" video="mainVideo-color" id="subtitle"]]
[[!template text="""monotonic colour setup, where this one is a very monotonic,""" start="00:10:15.960" video="mainVideo-color" id="subtitle"]]
[[!template text="""very subtle difference of white colours used for the base""" start="00:10:20.360" video="mainVideo-color" id="subtitle"]]
[[!template text="""colours. I don't have to make too many changes to the colour""" start="00:10:25.060" video="mainVideo-color" id="subtitle"]]
[[!template text="""setup. I just have to provide the base colours that are""" start="00:10:29.040" video="mainVideo-color" id="subtitle"]]
[[!template text="""different. The same can be said for this orange, very orange""" start="00:10:32.080" video="mainVideo-color" id="subtitle"]]
[[!template text="""colour theme, which is based on the base colours of""" start="00:10:36.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""orange-like colours and gives the shade of various""" start="00:10:39.360" video="mainVideo-color" id="subtitle"]]
[[!template text="""different setup. This means that I can use Hasliberg""" start="00:10:43.640" video="mainVideo-color" id="subtitle"]]
[[!template text="""Theme Nature colour palette, and that gives me more of a green""" start="00:10:50.720" video="mainVideo-color" id="subtitle"]]
[[!template text="""based colour where all the base colours are set up with a""" start="00:10:56.160" video="mainVideo-color" id="subtitle"]]
[[!template text="""greenish colour setup.""" start="00:11:00.840" video="mainVideo-color" id="subtitle"]]
[[!template new="1" text="""Wrap up""" start="00:11:06.240" video="mainVideo-color" id="subtitle"]]
[[!template text="""With that, I would like to wrap up with a few ideas when""" start="00:11:06.240" video="mainVideo-color" id="subtitle"]]
[[!template text="""adjusting themes and working with colours. Maybe consider""" start="00:11:10.400" video="mainVideo-color" id="subtitle"]]
[[!template text="""using CIELAB, CIELUV, or OKLab-based colour spaces that""" start="00:11:13.760" video="mainVideo-color" id="subtitle"]]
[[!template text="""would give you different shades which are easier to work""" start="00:11:19.360" video="mainVideo-color" id="subtitle"]]
[[!template text="""with for human perceptions. color.el and ct.el can be a""" start="00:11:24.720" video="mainVideo-color" id="subtitle"]]
[[!template text="""great tool for making shades and working with colour spaces.""" start="00:11:29.200" video="mainVideo-color" id="subtitle"]]
[[!template text="""Hasliberg theme is yet another theme, highly personal""" start="00:11:32.560" video="mainVideo-color" id="subtitle"]]
[[!template text="""and experimental, but could be an inspiration for your""" start="00:11:36.240" video="mainVideo-color" id="subtitle"]]
[[!template text="""theme journey. With that, why not sprinkle your Emacs with""" start="00:11:39.000" video="mainVideo-color" id="subtitle"]]
[[!template text="""your favourite colours? Thank you.""" start="00:11:44.120" video="mainVideo-color" id="subtitle"]]
Captioner: sachac
Questions or comments? Please e-mail [emacsconf-org-private@gnu.org](mailto:emacsconf-org-private@gnu.org?subject=Comment%20for%20EmacsConf%202023%20color%3A%20Colour%20your%20Emacs%20with%20ease)
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