I didn't think the 12/3 was an issue, but I see now the code section involved,250-119(b). It just doesn't make sense to me, I mean I can put purple tape on a white wire to reidentify it for ungrounded use. I can put white tape on a black wire to reidentify it for nuetral use, but I can't put green tape on a red wire to identify it for grounding use?? Does anyone know why this is??