Chard, for your purples you should talk to Karen. Her purples are similar to yours, showing co-dominance. I had a spawn of them and got purples from just the fathers genetics (mom was a dragon geno).
Unfortunately betta lover1507, he can't place them unless they go into variety. I believe they are VT.
Also on your DTs, they look good! Keep up the hard work!
Who am I? Well I am a Junior Member of the International Betta Congress and a breeder of white HMPKs, red dragon HMPKs, black/red dragon HMPKs, metallic multi HMPKs, blue masked HMPKs, and now multi color HMs. Soon to add black HMs. I will be showing in New Breeder class in fall of 2012.