Since the 7.0 update (7.02 is the same) Ethos shows the page background colour on the page content. It shows correctly on Chrome (PC) but Firefox & Safari show it incorrectly. Chrome on the Mac is also wrong. Doesn’t matter whether I look at pages, posts or search results, that left hand side shows the page background colour.
No caching, the clone site which is still running pre 7.0 is fine. I’m normally quite good at finding CSS issues but this one’s got me.