Hey man... This shit is interesting. My last plant I grew in my dresser, was also supplemented by a 2ft UV-B Floro. Now I did not get pink hairs but I did get frostier buds. My friend however has a different strain and he too is using a couple UV-B bulbs. He isn't sure what strain as it was from some good bag seed. The weird thing is that, I built a new cabinet with a lot bigger light than what he is using. A clone from his plant is almost 1 month flowering in my cabinet with NO pink hairs at all. The ONLY variable that is different is I have way more light than he does, which I doubt is the reason, OR it is the UV-B supplementation. I do not have any in my new cabinet. Your pics look identical to his shit, which makes me ask- are you supplementing UV-B at all? I was going to move my UV-B from my dresser to my new cab and see if her hairs started turning pink but haven't got around to it yet.