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🕸📝Fergus Duniho wrote on Sat, Mar 2 10:26 PM UTC:

The Dark color scheme seems to be looking good now. The next thing to do is to set cookies when someone selects a color scheme. After that, I'll make System the default, and with that set, the Dark color scheme will go into effect for those whose browser has a dark color scheme. Until then, Light remains the default, and you can see the Dark scheme on a page-by-page basis with the Tools menu.

Some details needing fixing are the colors used in Interactive Diagrams. I added some CSS to turn the red bar at top to maroon for the Dark color scheme, because it contrasts better with light text. But it also has some onclick u tags colored blue. To match other links, these should be colored "color-mix(in oklab, currentColor, blue)".

Link colors are as follows for both the Light and Dark schemes:

unvisited links: color-mix(in oklab, currentColor, blue)

visited links: color-mix(in oklab, currentColor, indigo)

hovered over or focused on links: color-mix(in oklab, currentColor, green)

The purpose of using color-mix is to make sure the text properly contrasts with the background no matter whether it is dark or light. The currentColor value is the color of the text, which will either be black for the Light scheme or off-white for the Dark scheme. Using color-mix will blend this color with blue, indigo, or green to get either a light or dark version of these colors, depending upon what is needed.

Blue was chosen because it is the traditional link color. Indigo was chosen to contrast with blue without drawing more attention to itself. We were previously using another shade of blue, and I couldn't tell which links were visited and which were not. It should now be more obvious, because the contrast between blue and indigo is stronger. In global.css, I had started changing the background color for hovered links, and in globalindex.css, the text to hovered links was being changed to red. I decided to not change the background color, because to do this effectively, I would need to do a color-mix with the background color, and while CSS gives me the text color with currentColor, it does not provide the background color with something like currentBackgroundColor. So, to change the background color, I would have needed more complicated CSS. Instead, I decided to change the text color, but since red means stop and green means go, I replaced red with green.