Cold temp question

[GrowersUnite]

My white rhino is now turning purple. the low was 56 and today the low is 45. Yesterday wasn't that cold, and today so far is 55. So it hasn't drop any lower than 50, at the most, according to Accuweather.com. I still have 4 weeks to go!

I've grown inside only a couple times., and only had slight purpling of the stem. Does this mean I have a purple pheno, or just the temps?

 

[Phedrosbenny]

It could be either.But I would guess it was the temps.What version of White Rhino is it?

 

[GrowersUnite]

I shoulda added that, it is nirvana. all my grows have been with the same exact plant/clone.