What kind of color combo would you like? If you give me some base hex values I would attempt that for you. Color changes are fairly easy with Aseprite which is what I use. I haven't considered a jump animation but I will now. It may take me some time to implement though as I have a few other projects on the go. Thank you for asking!
It would prefers be a mix of black,white and orange. The orange could be the one used on the current orange cat.
Jumping and hover / falling would be something Id like to use in my game. Also maybe something like climbing ( paws up for a robe grap and movement )
What would be your timeline be for this could be added ?