has anyone had luck propigating double impatients?

Three years with seeds from Parks and T & M and lucky to get 10% germination, Grow light, heat pads. For the money I invested could easily have bought all the flats needed.but want a particular salmon/peach color that the growers don't offer.

Have tried cuttings in water. Get plenty of roots but when i transplant to peatmoss/perlite medium they rot off at the surface