Thanks for the pic!
Looks like you're right, though the darker pups look more like how agouti pups usually do to me. o_O; We'll see in a few more days, but I think you're right.
I hope that kid takes your advice, but who knows. Maybe you can be sneaky and give him Twinkle and a male pup that looks like Bitsy instead.
The pups look really good. Be careful handling them, though. You're in danger of culling until about three weeks, though I'm guessing Bitsy is very chill with you. As a hamster adviser of sorts, I had to warn you.Most females would flip out if you handle the pups before their eyes are open.