How long for trich's to start turning after pistols start to turn?

This is my first good grow. With my last two grows I made too many mistakes with wrong lighting etc. They are 50% sativa and 50% indica's, 12 weeks into flowering now. The pistols started changing color a week ago. They are light to medium brown. Roughly how long can it take for the trich's to start changing after the pistols have started to change? Like 1 week up 5 weeks? What is the longest time frame any of you had to wait after pistol's started to change before harvesting?

A week to a month - varies a bit.

Ok. I didn't know if i needed to start worrying cause pistols started changing over a week ago and trich's are still clear and not even cloudy. So I take it thats normal then.

It could be normal with some strains,but I'd check good for male parts sometimes a herm will self pollenate causing premature pistil coloration