I agree with trilobite. And what ever we say is merely theoretical probabilities.
Bad genes from rose is mainly bent/curly fins which usually show at an older age (above 5 months). While DT shows at an early age and is mainly spinal issues (some show after fins have developed).
What look are you looking for?
DT female is green. #2 male is black with green irid + orange fins (some people include them as mustard gas). Color Probability might be black with red/orange fins and most probably green irids on body, green/turquoise multi. Not sure about blue - depends whether the male has blue background or not.
DT female x #1 male would probably produce blue/green/turquoise/metalic blue multis and some solids. BUT you want to reduce ray branching - which wont be achieved by the DT. It would be better to breed him to a 4 rayed HM....... wait on, when the DT flares, does her fins spread 180? iF so don't breed them. But if her fins are like in the picture, you can give them a shot because that means she has few ray branching. But be prepared to cull a few due to DT and rose deformities.... up to you.
I don't know how feather tails work so if you're trying to get those, I'd just breed back to daddy in the future.