Pictures of the parents would be great. You will get wider finned veiltails, and perhaps some split tailed. I think? You will get blue, red, red/blue wash... Orange is a mutated color from red, and green will have blue underlay. You may get some that have a green look to them, and some with lighter red (close to orange) as well.
Live food is the way to go. BBS, is my favorite, and I thought it was going to be hard to hatch them and it is not; Aquarium or Marine salt, pop bottle (no top), air hose, pump, water, conditioner
And a light they can swim to. If you have live plants in the tank the fry are in, there may already be infusoria along with daphnia, which in my tanks seem to always be there before a spawn, and are eaten soon after there are free swimming fry.