Add color for multiple missing elements

[waruhachi]

Added the appropriate colors for multiple new elements

[mvllow]

Not sure if intentional or not but the font has been removed. I personally don't mind leaving it out, though.

Would you mind sharing screenshots of the changes?

[waruhachi]

I removed it intentionally as I don't see any significance in its relationship to the theme. I think it can be left to the individual user to use or not use a custom font alongside the theme.

Along with some more elements covered, the code has also been organized to make sure both dark and light modes are consistent. I have included screenshots reflecting the changes made below. This doesn't show all the places the changes can be seen but a majority of them.

Images

### Active Now - Added card background Before | After :-------------------------:|:-------------------------:  |   |  ### Profile Popout - Added background to profiles and elements - Removed background and border for badges Before | After :-------------------------:|:-------------------------:  |   |   |   |   |   |  ### Modals - Added background, hover, and select colors Before | After :-------------------------:|:-------------------------:  |   |   |   |  ### Miscellaneous - Blend profile quick actions into the sidebar - Match scrollbar colors Before | After :-------------------------:|:-------------------------:  |   |   |   | 

[mvllow]

Thank you for the before & afters, everything looks great!