I have made up my mind when I buy a bee it will already be a minimum of 4-6 months old.
I've seen lots of bees, and while most do turn three colors; brown/tan, yellow, and white, I've seen at least 6 that were solidly yellow and white. Their backs did not brown at all. THAT is the kind I want, but since I can't tell a baby that will brown from one that won't, I resolved to save my pennies and buy one that stayed yellow, I think I'll be well repayed by stellar babies down the road.
Gale