Ya know, that is a great question, and one I have been seriously wondering about lately myself. When I look at him, I see lots of grayish brown remnants that don't look black at ALL, but then there are a few specks here and there that do.
His belly is actually just as light, if not lighter than a totally full-blown killer hypo female I have here. What is really bizarre though, I cannot say that I have ever seen a genetically recessive hypo start out of the egg quite that dark looking though like in the pic in my above post.
This guy is a really tough call man. I would have to test breed it to a strait up known hypo that is not het for any of his like genes to really prove if he is or not without a doubt. Most animals are much easier for me to say one way or the other by looking at them, but this guy really has me scratching my head as to if he is truly a genetic recessive hypo, or just doesn't have much black so it is easier to see into along with the red/orange. Every time I look at him closely with my naked eye, I keep thinking he is a true hypo that just happened to pop out of the clutch.....weird! The photo makes his blotch borders look much darker than they actually are too, which doesn't help any, and I just took him out again and could almost swear he is a definite hypo..LOL!......weird!. Guess I will know later on sometime in the future. 

And here is his super dark red wild-caught Orland Fla. mother.
All the other 19 babies "seemed" normal too.., but they are all gone now except the dark female sib to this one above, and she definitely isn't anything close to being hypomelanistic. She looks pretty dark red like the mother below.

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"a snake in the grass is a GOOD thing" 
my website -serpentinespecialties.webs.com