A few months ago, we installed a simplified style called "blueplop" which could be manually activated in the event of using a mobile phone (or as TotallyUncool pointed out, in the event of wanting a more discreet style available in the workplace.)
Due to a recent update it's now possible for the board to attempt to auto-detect if you are using a mobile device, and if so, it will automatically switch to a mobile style. There is also a simple option to manually switch back and forth via a link visible at the bottom of each page.
Note that unfortunately at this time the mobile style does not have the "thumbs-up" (thanks) option, so if you feel compelled to thank someone for their post, you can temporarily switch back to your default full style to do so.