I do not see all that many purple plants coming from GDP stock any more. Most every plant I see grown out of their gear is green. I have found other breeders that put out more consistent purple stock. Mass Medical Seeds Star Pupil is supposed to be purple from every seed. My Star Pupil is the only plant I have seen go from purple to green because of high temps lol. It was odd to see. CSI:Humboldt and Pirates of the Emerald Triangle produce lots of purple plants as well. NSpecta, the breeder for the last two companies, is the breeder of Obama Kush and is supposed to have one of the nicest Purple Urkle cuts there is. He has a few posts showing off some purple males.
This male is not purple but is stacked! He mentions in the post that he takes his males deep into flower in order to see theri full expressions.
I meant to mention that MMS has a new line called Grape Pupil which is their Putang (Tangie x Star Pupil) hit with reversed Star Pupil pollen. From all the pics I have seen it is another all purple variety, but instead of the Star Pupil scents it has more of the traditional grape scents and flavors. I would grab a pack of the Grape Pupil if I did not already have more Star Pupil seeds to work through.