When to harvest pure sativa???

i know shes got a few more weeks. but for a sativa should i harvest when trichomes are all milky some clear??? wouldnt lettin them turn amber be pointless, cause its sativa and amber trichs are for body high which is what indica brings.. im not sure, its my first grow. ive posted alota threads on my grow but havent asked this question yet.

also the leaves are curled cause of one night of 32 degree weather, but it has warmed up alot since than.

https://www.rollitup.org/harvesting-curing/210501-zeuss-take-harvesting.html

Read this

well that was informative, but not what i was lookn for.