Rather than use a commercial hatchery, why don't you try to find a local breeder? OEGB are very popular, it shouldn't be too hard to find someone breeding them in your area. You're likely to get better birds that way.
Ideal has fairly decent quality birds. As for color...that's a tough one. I love them all! Right now I'm especially wanting fawn silver duckwings. You could always order the assortment and see what colors you get!
I currently am raising all oeg bantams thats at least 20 different purebred breeds and I seem to favor and sell the most true blues which are very rare and dont see everyday it took some time to get it right but now that I have it perfected I have perfect show quality blues as for everyday birds I would also say the bb red is your most common...