You posted a pastel and said it was yours. How old is it and how many grams? After about 1500-2000 grams they darken quite a bit. One of our pastels was one of the brightest pastels I have ever seen. Now she looks like an adult pastel. You would never be able to look at her and imagine her being such a stunner. Sorry but it's just life. All ball pythons look completely different at 2000+grams than they did as 200gram babies.
I could be wrong but your pastel doesnt look to much bigger than about 1200g. Now I could be wrong. Just a guess buy the coloration.