User blog comment:DaNASCAT/Technical Update:July 15, 2015/@comment-3388044-20150716133758/@comment-11842624-20150716211923

Kirkburn, grey background of profile: I never noticed it before. And not because he is disabled through local CSS. It just doesnt exist on some wikis: Mistery for me.
 * http://ru.community.wikia.com/wiki/Участник:Hedgeg
 * http://ru.dont-starve.wikia.com/wiki/Участник:Hedgeg
 * http://ru.warframe.wikia.com/wiki/Стена_обсуждения:Hedgeg
 * http://ru.mlp.wikia.com/wiki/Участник:Hedgeg

for some reason Wikia use different versions of the Qualaroo.scss: ''links just in case. much more convenient to see for yourself in the browser''
 * Qualaroo.scss 59strings working background (file link exchanger ) = ??
 * Qualaroo.scss 56strings not working background (file link exchanger ) = ru.warframe.wikia
 * Qualaroo.scss 41strings:
 * working background = ru.dont-starve.wikia, ru.community.wikia
 * not working = ru.mlp.wikia