canopy is a bit fried. the autumn colors are probably genetic, but cooler night time temps can exacerbate it.
It can still finish.. no reason not to lose patience. scope those trichomes and harvest when you normally would. if you notice anything odd like dead sugar leaves, look for rot underneath. otherwise, if healthy outside of some crispy leaves, i'd keep forging ahead.
consider a different formula next time. most suggestions call for way too much p or k in bloom. if it builds up to toxic levels that;s the plant sayin, "hey, i can't use that much that fast, buddy."