Just in case they're still checking in:

I just tried dying the Riveria Dress from the Gold Saucer - while it is already dyeable, I'd like the top-part to change the colour aswell. Currently it stays in this brown-red-ish colour which is hard to match with other colours (specially different reds, some blues, greens...)
I feel this item would be a lot more usable if it dyed as a whole piece.