I bought a cover for my 210 (w/t-top) from Covers, Inc. There website is:
http://www.coversinc.net/
I have some factory pictures to help with the initial install, pm me if you would like to see them. The cover works great for storage and I have modified mine for travel, it's been to Baja and back four times now (I, too, live in CA.). Downside is they are expensive, I think I paid just over $800.