Looks purple alright. To be fair my one from before was grown into the early summer, just before the heatwave kicked in. I wish I took pics back then. It really was almost lime green with the brightest orange hairs but other then that it looked very similar. Out of the 10 that I've just done only the Lemon OG Kush hasn't gone noticeably purple, even the Cheese Dog Haze has a little bit on top. I just took the Darkstar down but haven't finished trimming her yet. She's a pain to trim lol but she has some nice shades going on.@ProfessorFlora
I remembered to snag a few pics of the stalks on my critical+2.0 girls for you Prof.
I know you had mentioned the purple that you though was from cooler nights but my girls have been around 70 at lights off and have showed some colouring.
Take a look