Purple Colour And Temperature

Purple autos only show their colour if the genetics carry anthocyanin and the night temperature drops a few degrees in late flower. Plenty of people buy a strain for the photos and get plain green buds because their tent runs warm all night. Which strains colour up reliably at room temperature and which need a real cold snap is noted on https://turboautoflowerseeds.com and it saved me buying the wrong one twice. The colour is cosmetic anyway and says nothing about potency.