User blog comment:Xean/Slick Skin and Wordmark Tips/@comment-1627201-20110728172019/@comment-265082-20110728185720

Actually, using a transparent page makes a wikis readability worse, as is the case with AssassinsCreed and Ben10. I think it was a bad idea to add the adjustment to the Theme Designer.

I personally could care less about the background image, as some people may never see it.

Thief, Durarara!!, Toaru, and Gold Box make use of the WikiHeader and use a simple background.