Matt Khourie color bleed like what your images shows, can be caused by a bad T-Con board or a bad main board as well. I would not yet give up on this. You did not tell us what exact model your TV is so you are a bit on your own researching the main board/T-Con board. Try to get a used one and see if that makes a difference. If you got to buy new get it from a place that has an easy return policy. I am not convinced that this is a panel issue. Possibly but you want to check other things as well.