He is awesome! As soon as I saw him, I thought for sure you got him from Aquabid or one of those sites!
I have a lfs Delta tail who was pretty much the same color as yours on the body when I got him. Actually, mine was almost white. It looked like someone had taken a paintbrush and painted white paint over his scales. His fins were just kind of transparent and greyish looking.
That was a few months ago; now his body is a beautiful bluish-green color everywhere instead of whitish looking, and his fins are a mixture of smoky grey and blood/rust/red. I really need to take a pic of him, but I can`t take fish pics for the life of me. I will give it a try though.