Board Thread:Questions and Answers/@comment-4600367-20140513162152/@comment-4621372-20140514222730

Basically what Damian said.

The color system on Wikia is basically the same as HTML coding (for that matter, you  can  use HTML code in Source mode).

So before you type in "#RRGGBB" you need to first type in "color".

Alternately, you could also try " Text here ". That SHOULD work.