Alternate Post Styling for Different Authors?

I'm setting up a blog for the store I work at, which has different departments set up as different authors (mainly the Deli and the rest of the store). The question is, is it possible to have the different authors' posts styled differently. For instance, I'd like the deli's posts to feature the deli logo and colors while the other departments use the regular theme.

Is it possible to use alternate CSS classes based on the author of the content?

Thanks for your help!