Yeah, I can see that too. Older pewterbees I've seen gained more yellow from their axanthic looks, but yours has a ton of yellow already! That's pretty cool!
I stuck with queenbee, but I'd say it's a fair 50/50 queenbee / pewterbee. Regardless, it's definitely a triple, and not a bumble or lesserbee. So that's awesome for the OP!
Im so excited to breed her now the long wait begins till shes big enough its definately going to be a suprise either way!!!!