And if by "proposed availability for ATC's in the state of Colorado?" you mean how many openings there are, I don't think anyone really has that information. Lots of people have asked similar questions and nobody really has any straight answers unless they know someone at a particular facility. I live in CO and it seems, from some conversations that I've had, that the demand for people is very high everywhere.
I'm sure others will have more information to add. Good luck with the process!