Have you seen both?
Taste is personal, but I think the mocha works better with the lighter interior, the sandstone has the same tones as the Mocha so they play well together. The ceramic (my second choice) looked great with the ebony bc there's a lot of dove grey in the ceramic, which is in the same color family as ebony. And, the ebony has the light stitching, which subtly coordinates with the ceramic. Very elegant.
So, bc I wanted a lighter interior, the mocha was the clear winner. If you need a dark interior, then the ceramic is an easy (and elegant) choice.