clear is more heady, amber is sleepy. but i usually wait till i see an amber or to on about 2-3 places i look per plant. i must state i like sativas though

as far as pistols its easier on indicas because i have a sativa that looks done pistol wise (8 weeks) but just plumps for a month and her trichs are pink, purple, maroonish but at week 12 ill get some amber trichs. but shes still good at 8 but the high is wider at 12 where i get clear milky and amber.