Honestly... I would be okay with just taking the current female plate/skirt models and recoloring them to the brown/black/white/red whatever robe colors. That wouldn't take too long for someone with some basic photoshop skills. If you could get me all of the sprites I could probably do it at work tomorrow.
I'm not certain the chain mail armor would be as easy... but the robes, I think, would be quite simple. No?
And how would you differ from black robes/black armor, blue robes/mith etc, good thinking but it just doesn't work would need more editing that this
...The blue robes/mith armor are not even remotely the same color. The black robes/armor are not the same color... however the priest robes ARE the same color, but there could be some piping added along the sleeves and collar or something of that sort. This really doesn't have to be some huge endeavor and there isn't a need to recreate a female model for every piece of armor. It's just recoloring and just using different shading.
Like I said, if I could get the sprites I would be willing to at least give it a shot and obviously I would have to submit whatever I did to someone before it went live in the game so it could be looked over and critiqued, then adjusted accordingly. I'm only saying I'm willing to help if it speeds along the process. I don't see anyone else offering.