Silkie chick color-buff ??

[Dtbcmb]

So I got a couple of chicks 1-2 weeks ago. This little one has me stumped. Still leaning buff but his or her sibling is pure buff where as this one has some black/blue coming through.
Parent combos could be
BuffXBuff
BuffXSplash
BuffXBlue
Just buff with leakage?

 

[nicalandia]

That is just a Buff chick.