Outdoor- Purple Growth = Good or bad?

Hey all, this is my 2nd year growing. first year was fairly successful. this year I have noticed that on the top of one of the crowns of my 12 headed plant from supercropping has started some purple on the leaves. The purple is blotched on of of the new smaller leaves and has some purple on the outside rim of a fan leaf nearby. To me purple almost seems like a plant deficiency, because my retard friend last year kept his plant in a bucket outdoor all summer.. the top part of his crown was purple with small and leafy purple buds. he claims it smoked dank but...whatever. what do you guys think?

Purpleing on the stem is some form of deficiency, Purpleing on leaves is either from low temps or hereditary from strain.

what are your temps at night? leaves will turn purple with colder temps.

the temp doesnt get lower than 65 degrees, and no its not on the stems its only like a blotch on one of the leaves..

I have 6 other plants nearby under the same conditions and this purple is only to be found on the top of a head that leans off to the side, not directly on top.