As the days go by and the weather in my area is getting colder, I've got a difference from almost 10 degrees between night and day, so one of the girl is getting some purple colors in the buds.
Everything else seems normal, I just had to change the light cause my 600W LED fell out. Now I'm using a 200W till I hopefully can fix the other light.
You are right in the window
Get the trichome microscope out and check trichomes.. pistils have nithing to do with rippening. Certain strain will have lots if white hair left at harvest sone strain will have hair falling off and that is just genetic. I can have have all hairs turn black in less then 24h 4 weeks into flowering . Hairs can help figurout the harvest window but all strains are unique.