Use Briar blue instead of theme selected color

Currently we use @theme_selected_bg_color for things like usernames. This is mostly blue, but on e.g. Linux Mint it's green. There, the difference between own and their usernames is not visible that much, because both names are colored in green. We should use the Briar blue code instead, so that we have blue-green on all platforms.

changed milestone to %GTK 0.1.0-beta3

added T: bug label

added Good first issue Help wanted P: high UI/UX labels

assigned to @x0loots

@x0loots The exact color I was referring to is "Lime 500" - #74B816 from this line of code.

There are many more beautiful colors in the style guide, for the future.

mentioned in commit a29c8a79

mentioned in merge request !88 (merged)

closed