See size fit in description below. No discoloration as you may think. These were unique and now cannot find them online anywhere. The pink plastic has slight swirled colors. This was natural to the shoe. Worn only three times by me. these are a size 7Y my opinion is that they are similar to ladies size 7 1/2 to an 8. I wear 8 1/2 and these were a little too tight for my 8 1/2 foot at my toes. It would be up to you to decide if you can wear a 7 youth (not infant, not toddler but older kids) Smoke free home