you could do it. color doesn't change the fish, you would jsut get different looking babies.
when breeding to blood parrots remember that males are sterile and you need to have a female, with the convict being a male (for obvious reasons ).
but other than that it can be done. you could breed black, pink and calico convicts to parrots. like i said before it's jsut a color, it doesn;t change the breeding habits.