Yuo newbs need to learn to downsize your piks...It is hard on those of us that would help you and have the knowledge to help you...when you upload a gaint pik...personally I want to answer your Q's, but i will not waste time waitng for pik to load.

down size to 600x800 or less than 1mb if you want consistent help...peace

by the way...You DO NOT harvest off of the pistil's (hairs)...you look at the trichomes to determine maturity.
You need a 60-100x pocket microscope...Radioshack sells one for $12.00 US.

If you must harvest by the color of the hairs...wait untill the pistil's on your most mature buds are dying faster than new pistil's form on younger buds, then It is about ready...this method works as stated above, but It is not as accurate as reading the color clear/cloudy/amber of the trich's...latewood