Isolate her until you get about 3 or so eggs that are infertile from her... or approx 3 weeks...
If he's carrying chocolate, then you would get some chocolate pullets...
ETA: Lavender will breed visually like black when bred to other colors... so...
Black Male carrying Chocolate X Black...
Yes, that was in the info I can't find or remember all of right now... *I think* it is similar to being reversed, but different... ugh, I will keep looking for it... it wasn't on BYC and it wasn't what I was looking for, just something I had stumbled across and remember parts of... :/
Sorry I'm...
I once saw an excellent explanation on this, well spelled out, but I can't seem to find it now... I'm sorry... I will try this in non-technical terms since I really can't remember them and don't want to really mush things up...
What it comes down to is that chocolate is a sex linked recessive...
Nope, that's impossible... females express chocolate with a single gene... it takes 2 chocolate genes to express in a male, but they can carry a single gene that hides under another color, thus being split... :)