The icons on the Unity launcher are square and contain the icon image and have a coloured background. The icons have different colours as their backgrounds (see screenshot). How does Unity decide what colour this should be?
SnapOverflow
The icons on the Unity launcher are square and contain the icon image and have a coloured background. The icons have different colours as their backgrounds (see screenshot). How does Unity decide what colour this should be?
Looks like it's using the average (RGB) of the colors of the icon.
Take a look at the upstream code for details.