Gak! I was processing pics for posting and ran out of fizz just as I hit the catbird pics... I'm hoping I can finish going through the last few pics tomorrow and then maybe I'll have one to post.
Meanwhile, though, google 'gray catbird' and you'll get pics. They do have gray feathers, with a charcoal gray cap and orange in the undertail. They've got an interesting song with phrases like a mockingbird's or a brown thrasher's in tone and composition--but where the mockingbird repeats a phrase multiple times before moving on, and a thrasher repeats everything twice, a catbird sings each phrase once and moves on to the next...