The stretch and movement of the catsuit is nothing like leather, real leather bags at the joints and creases as it has no memory, not worth the heartache unless you are going for a motorcycle outfit style
Try and get some samples from Stretch house etc for their matte vinyl. I have handled some and it is really nice.
I have some rubberised heavy duty stretch fabric same depth of sheen (not much unless a polish is applied) but a bit more winter weight!
The matte vinyl can be stenciled
You can get automotive spray paint that is intended for use on the vinyl/plastic componants. It should say for use on vinyl on the can
Aside from the half open zip it's one of my fave Catoman designs
Good luck and have fun!