Hi, sure. 1) All pages can have all its own suffix 2) And all module can have its own class suffix Or you can override style in general. It depends only on your decision and CSS skills.
Thanks ! I'm not a css expert but gavick framework is really awesome & clear. I make the changes to suite the combination of colours of our fishing club (red and blue) and the results are great ! http://www.club-pescadores.com.ar/ all changing 3 .css and one .js
We have also guides , in most topics also how to use suffix: https://www.gavick.com/documentation/?s=suffix -- Thanks for good review of GK product(s). We hope that upcoming templates will be even better. "News" template has few years now.