what strains are you growing dusantafari ? indica's or indica crosses I'd guess.and yes,indica's or indica dominant strains will turn colors during late flowering, when night temps drop in the fall you'll get everything from light pinks to dark ass purples.most indica's anyway's.also some strains seem to turn red as heck due to the high concentration of calyx hairs.kcbrains mindbender turns a bright red after drying and curing thats beautiful to gaze upon.but in actuality color is not representative of strength.good luck with growin' a rainbow man