I got a terracota with a fill but ended up keeping it. I learned to consider it like a freckle and I like the pipe. I was a little put off at first that a pipe like that would have one so visible...but it's all good now.
I see that Smokingpipes had some oak stained pub pipes. But I think I should stick to the pipes I have. But if someone has a nice photo of one at home maybe I'd change my mind.