purpple buds

my buds started turning purple i have asked a few people about it and they said it could be caused from frostbite.its also purple on the stalk and leaves and when the purple started. in a couple of days brown hairs started. and some say it could be the strain ak47/613 so can anyone help kind of a new grower?

Its the cold weather bro! why u so scared?

Some strains do it naturally when the nights get cool. I see 40 degrees at night pretty regularly. Some of my plants are turning purple as they flower, others stay green. I want my blackberry Kush to get as much purple as possible just because it looks cool in the bag when its done. If you're not seeing weather below 32 degrees for extended periods you should be fine.