For all we know…
…what you see below are 2 single gene Wookies. You can see they can vary quite a bit.
This really makes it more difficult to identify them in a clutch. Although needer one of the 2 have been proven to be only Wookie. It’s been proven that the Male is at least a Wookie!

1.0 Wookie

0.1 Wookie

Below you see 3 Wookie Combos. Some are really obvious, others are very difficult to see.
It seems though that Wookie likes to make things Black and Silver. Wookie and YB combined with Mojave become a really rich dark Black. I can’t wait to get more Dark Side of the Wookie…