Refine colors in dark mode

[M00NJ]

In light mode the available task colors look really nice, but in dark mode not so much. Orange is almost brown, Yellow has a green tint and Red is very dark. In general the colors are a bit over saturated if you ask me. I think this is because the colors are not fully opaque, so the background color comes through. This doesn't affect the colors in light mode since the background is white, but in dark mode the colors are changed.

Light	Dark

[mrvladus]

How is this looking?

[M00NJ]

Wow, that was fast. Yes, this looks much better. Thank you!

[mrvladus]

Changed in 46.0