TBH, that makes no sense to me whatsoever. Show me the rule book.
Honestly, honestly, I think you need to lighten up on squares (it seems like you are 99% toward a white TV fold, and I seem to remember you saying you disliked other folds--which is fine). I think there are always several options for any fit in regards to colour and to a much lesser extent material. I think folds can be applied well, but in no way whatsoever ruin a fit. 'Rules' like no coloured edges are just... IDK... ruining in themselves.