I'm still new to this to, it's my first time, more of a trial and error but am happy with how they got so for, they have been in flower 8 weeks this Thursday, and it's an auto with flowering time of 8 to 9 weeks, well I have just been reading about the pistol colour which I had not heard of before, not for harvest anyway, I'd say they are about 70% are so brown colour, but trichomes are like 60/40 so I'm not sure which to use to determine the harvest