Well, then - different strains have different "windows" of peak ripeness. This is the period in witch the trichomes are the most mature, full of THC - milky-white color. After that, THC starts degrading into CBD and other cannabinoids(red, amber trichs). Some people actually wait until some of the trics have dark "heads" - the higher CBD-levels usually mean a more body-sensation/stone, rather than an energizing upbeat high - witch is the case with milky-white trichs, witch leads to a more balanced and not edgy effect.
Usually, the "window" is about 10 days, but some strains never have 100% milky-white trics - they mature unevenly, witch would mean that there are still clear ones, milky-white ones and some are already degrading - this usually happens when chemical nutes are being used. It is simply an "urgency" to become more attractive and when indoors, the plant's instincts to continue reproducing, a mutation occurs. Such mutations I have seen to occur many times with the use of strong boosters, like Shooting Powder - another layer of calyxes takes place on top of other calyxes. Just saying that it has nothing to deal with "reaching the genetic potential" of a plant, rather than being a simple mutation, caused by overdrive of minerals to some places for a certain type of plant-cells, witch results in a development of certain parts of the plant, on other parts' account. For instance, the new layer of calyxes may use up a lot of nutrients - so much, that in fact the plant never gets to meet its genetic potential in terms of aroma/taste, because terpens have been moved down in the energy-using list of the plant - a new layer of calyxes has appeared instead of that, haha - although a bit funny, that is my own opinion, after all, and is based on observation, reading and logic - as can be seen. I'm sorry if it makes no sense to some of you or even may sound ridiculous, haha - still, that is what I have to realize. Perhaps, I've been coming across one certain type of info and some of you have come across the very opposite one - as I posted before, I was confused by this fact; if anyone has any other information, I would love to have a look at it, as my only goal is to know the truth, hehe...
Peace and Blessings.