Good luck finding a true gray, I've been searching for a while as well. No matter which color I sample the undertone ends up taking over. I initially painted the room Behr's Dolphin Fin, in certain lighting it does look gray but most of the time it just looked blue to me. It did look good though and my mom felt it looked very designer. I have sampled BM Stonington gray, even bluer than Dolphin Fin. I tried BM Silver Fox, Martha Stewart Chinchilla, I thought it was a good gray but in certain lighting it looked purpley. I tried Behr wheat bread (just not gray enough), Silver Sateen and Classic silver, both too blue. Tried BM revere pewter, looked greenish, SW Passive and gray screen, both too blue. So at this point I've given up, these sample are getting expensive and they all just look blue, purple, or brown. I have been wanting to give Dolphin Fin a second shot in a flat finish, but don't know if I wanna risk it. Oh, also tried Edgecomb gray, not really gray of course, more brown.
Q