purple pistils good or bad?

i have a huge indica plant planted outdoors its about 3-4 weeks in flowering and the pistils are turning purple is this a nute problem ar is it normal im using pure blend pro bloom and cal mag 30ml of bloom per gal and 10 ml of calmag and im going to add hydroplex this week another ? how much hyroplex should i use and how often any help is greaty appreciated thanks

indicas are known to turn purple i dont think its a nute problem so looks like you will have purple hairs on your bud:thumbsup: