CSS Repair on Wordpress Plugin/Site

I have a wordpress project that I've got 2 issues with. I'm using the latest version of Wordpress and the Thesis framework. Issue #1 is a CSS problem with a plugin for a tabbed section. The tab (when clicked) should turn a new color and isn't. I need that fixed. Issue #2 is that instead of a "read more" link for excerpting, the client wants a "Read More" button. We've tried every kind of trick we know to make this happen, but perhaps you know a trick we don't! This should be a fast and easy project for anyone with a background in CSS and wordpress. I need this done as quickly as possible. Thanks!