Usage:
-color [number between 1 and 24]

Short version:
'c [number between 1 and 24]

Changes the color of the selected unit(s) to that of the player color corresponding to the number. E.g. -color 2 will change the color to Blue, meanwhile -color 13 will change the color to Maroon.

Examples:
-color 4
(Changes unit color to Purple)