still love my CBM its different and hardly ever looks dirty!!
Yah CBM and Grey are great for not showing anything. I have a SS RX8 as well and it takes forever before I see it needs a wash. I think I wash my MS3 every weekend (first)
I do think that Mazda needs to give us a lifetime supply of towels to clean our fricken tailpipe with. Wow have a ruined a ton of rags already on that thing.