QoL: Add color to all cycle skill icons.

[jesusdh]

Personally I always know which abilities I'm using not because of the icon, but the color. On Vauban I know exactly which grenade is selected, which mote on Wisp, arrows with Ivara and elements with Chroma. 

 

So my suggestion is to add colors to all remaining, and future, cycle skills. The color helps a lot, for example: a lot of times I confuse Gaze with Deny, or the other way around, on Xaku. Having color will make it easier to identify the different skills.