Are you talking about other characters or do you want me to recolour Celestia into even more FiM characters? If its the former check out ~Durpy. She pretty much has every other character recoloured. If its the latter just list them here and I'll get on it.
Here's what I have to consider: -All I have at my disposal is Ms Paint. No layering, and no transparent backgrounds makes a difference. If I were to help out Durpy with this I'd never be able to put out the same quality content she does. I'm certainly not going out of my way to drop 200 USD for Photoshop. -When I told her about my recolours of Celestia she implied that she doesn't want any partners in this... though i could be wrong. I can make own recolours, but I'm under the impression that I'm pretty much on my own in this. I'm asking her for a shoutout ATM but I have a really bad feeling I'm going to regret it.