For sure, everything looked like fall time in Maine. Kinda dark red/ purple with some orange. They weren't super happy. But they didn't mind all that much either.
Sounds like a few of my plants. This is one of the Dogs I'm running at the moment, its near the floor fan, intake and lights off temps have been lower than I normally keep them. My other Dog, 2x Deepblue x Livers, Cheese, Blueberry x Cheese, SLH, Silver Kush have no signs of colours or adverse effects from the cold lower temps.
I missed a nanner on a Sourcherry so the seed is Sourcherry x Dog (squat version).
Hotdog x Sourcherry
Green Crack also got a little purpling on the shade leafs.