That’s an interesting combo. I don’t have any experience with Crele and Buff can be tricky. There are different ways to make buff and some of those diluters that are probably there can do funny things. So realize there is some guessing here.
Your Crele rooster is barred so all the offspring will have barring. Both have gold so they will be some reddish there. Those buff orp hen should contribute Columbia. What I’d expect are buff barred chicks. I’m not sure what exact shade that buff will be though. And it’s always possible, especially with buff, that something strange could happen.