Could be achieved via an in-game UI, BEHOLD MY HORRIBLE UI DESIGN SKILLS!
http://i.imgur.com/2DQ9YL5.png
Capped to 20 colourable characters or something, applies a single colour per character, but if it’s the same colour it’ll render as a range instead.
Colours are referenced by a hexvalue, and those “locked” colours could be unlocked in threes or sixes or whatever for $1 or something small, or awarded per 5 levels.
Displays in-game in the scoreboard and the kill feed.
What do you think?
