When i try to set a color to a new group, I can enter these data in the color column:
1. #888
2. #123456
3. green
4. rgb(132, 132, 132)
Flarum works well with 1, 2 and 3. But when using 4, I can see the real-time effect. But after saving, my color LOST! What's amazing, in group preference, my color code is still there, but the color shown on the icon is default color, not the color I set.
Sorry for my poor English.