All boas (BC and Bi - it's no longer BCc and BCi) have what we call 'baby grays'. The grey color fades and they gain yellow as they age which is why baby boas are gray and adults are tan/brown of both subspecies. The fading of the gray also usually allows more of the pinks/reds to show through. Speckles vary and typically remain about the same however yes they may gain some with age as well.
I hope that helps a little!
Reply With Quote