I had one lady in my last grow that went 60 days with no sign of turning color period. I finally harvested the rest and went to growing and reveging at the same time. It kept on growing for another two weeks before finally starting to turn color. Things are going well time wise, everybodys happy and flowering. Sooooooo, my guess is you could harvest now or go a few more weeks and hope it gets better. My guess is it will turn eventually, I don't think you went too long yet... Bottom line... It's your call - Good Luck!