I'm sure some purists will freak out about this ... but I really hated the white (faux leather-ish) cover on my Natura Classica. So I took it off and covered it with colorful washi tape. I didn't think it would be possible to love this camera more, but I'm even more excited about using it now! :-)
P.S. -- The cover came off REALLY easily, so I saved it and will make a template from it if I decide to recover it with leather or another suitable material.