Thanks so much, I am wanting to help this breed so much. I am more than willing to put up with faulty birds. Did you see much in difference in type/build? What about temperament?
If I remember correctly doesn't duane urch breed coloreds?
The Urch pullet that I recently saw had the best type that I've seen, but still needed to be bigger. Out of all the lines I've had, a couple of the McMurray birds had slightly bigger size than the rest but overall I had so many negatives with them I find it hard to recommend them. Some people have received a nice start from them, some have not. It all seems like a gamble and you have to work with whatever you manage to get at this point. Temperament wise, I've only had issues with a couple of the Superior Farms birds. If you include temperament in your culling selection, that won't be an issue. Overall, I think Dorkings tend to be docile chickens, but I've not owned many breeds.
I think I've seen Urch listed somewhere as having Coloreds. You might ask him and see. I hope Karen on here (ki4got) gets organized with her Colored Dorking breeding. I'd like to see someone with the expertise to take on that variety. I don't recommend that one for a newbie.
Best wishes!