Use less harsh colors in SRFI main page dark mode

[mcgoron-peter]

Updated dark mode styles for better readability.

In the future the colors for final/draft/withdrawn/selected should also be changed but I don't know what to change those to.

[mcgoron-peter]

The CSS is currently pretty bad style, I will fix it soon. But they will work if you load it into your browser and I'd like some comments on the color choices. I tried to make things follow the contrast of the light theme (for instance, withdrawn SRFIs are in a dark grey in the dark theme).

[mcgoron-peter]

Now with CSS variables. Should be much easier for people to tinker with the colors.

[aartaka]

Looks cool, with the exception of Dark Slate for withdrawn SRFIs. I’d make it slightly lighter.

I didn’t go forth with either variables of better colors to minimize changes and bikeshedding. I didn’t know what the procedure for theming was. But it’s good the process is that open! Thanks for this PR!

[mcgoron-peter]

Looks cool, with the exception of Dark Slate for withdrawn SRFIs. I’d make it slightly lighter.

I didn’t go forth with either variables of better colors to minimize changes and bikeshedding. I didn’t know what the procedure for theming was. But it’s good the process is that open! Thanks for this PR!

Here it is with LightSlateGrey:

DarkSlateGrey (current):

[mcgoron-peter]

I have set up a preview of the current CSS branch here: https://florida.moe/tmp/srfi-color-test/
You can switch to dark mode in Inspect Element.

[mcgoron-peter]

This is not a part of the current patch series, but I have tried the colors that I have in this patch series on an SRFI page. The files look pretty good for an SRFI that just uses the defaults: