Plants are looking very healthy, PotChimp. Can't wait to see how they grow. Purple colors will come through if it is in the genetic. With the low temp can activate and bring out more purple. Experienced my first purple plant and only had the temp at 75F, it show up late so maybe you have to wait near finishing time. Have not flower out GDP myself, so it may vary on color vs temp. However, bud colors are only for bag appeal don't stress too much on it. The effect is what keeps others from asking more of the strain. Looking forward to the bud poRn.