Thread:Vorknkx/@comment-3547390-20120228215130/@comment-1496755-20120315170807

Just let them repeat. Few games have ideally distinct level themes without repeating elements :)

Or here is another idea - try to count on how many levels the repeating textures appear. If the number is very low (e.g. 1 or 2), then we can assume that this is an exception and avoid the repetition. They will be included in the theme, in which they appear more often.