i actually don't use s2, i use the paid account option of writing your own code. however, some of the s2 styles allow customization and some do not. i customized danglypartsiple and cimness with it. when you finish picking the colors there's a [customize] link at the bottom of the page. you click that and there are three tabs. then one of them says 'text,' and if it's gonna let you change it there are boxes where you can enter an override for all the things you can override laid out separately. you tick the 'override' button first, then the field turns white and you type in it.