User blog comment:GingerbreadMeth/Epic Rap Battles of Gingerbread 1 - Ignignokt and Err vs Zim and GIR/@comment-26842383-20141210180105/@comment-3401602-20141210201114

Go on to a group battle page, let's say Artists vs TMNT, click edit, go into source mode, copy the code ", and replace the six characters behind # with any combination of characters that make a color you want found on here.

Example, for red, it would be #ff0000.

For something more random, light blue's code is #add8e6