Hello literarychicago,
The CSS plugin from my previous reply is a great way to quickly enter fast CSS tweaks. If you wanted to get more sophisticated, you couldĀ check out ourĀ Themer’s Guide.
This article should give you some quick pointers on adding a hover state to Firebug.
Although, because of some of the javascript in play on our calendar, it may be difficult testing out the hover in some cases. Your mileage may vary.
Cheers!
– Casey Driscoll