Board Thread:Support Requests - Designing Your Wikia/@comment-24133975-20141018024402/@comment-24133975-20141029005110

Spottra wrote: It could be as simple as adding color: white; (or whatever color you like best) to the existing CSS rule that generates the brick background.

background: url(http://img3.wikia.nocookie.net/__cb20140423202019/minecraft-computer/images/2/2c/Rsz_stone_wall_placed000.png) repeat-x center; color: white; }
 * 1) WikiHeader .marked,
 * 2) WikiHeader .navbackground,
 * 3) WikiHeader .subnav-3 li {

Just tried that out, I don't think it works. Gonna try contacting one of those Volunteer Developers that AwesomeOrange suggested, now.