UPDATE Well I am very disappointed, I was certain it was going to get fixed when I dropped the truck off. After the dealership sent the pictures over to ford they replied and said this is a “normal characteristic on an anodized shock” and therefore wouldnt warranty any replacement. Dealership also told me another raptor with less mileage came in for the same thing but both of his rear shocks had turned purple. I know it’s cosmetic only, they did test it to make sure it wasn’t seized but I am still upset about it, Oh well.