Ok I got it now...you have a Nutrient issue going on here and that why your leaves are turning purp up top only along with the bud and not your bottom leaves...you have to much phosphorous that is being fed and thats what happens...they say its kind of rare and hard to actually happen but is...
Um ok, but Top44 is suppose to be a White strain and now you have me really confused...where did you gets your seeds from? They must of switched your seeds up or something by accident... But hey, I like what i see!!!