liquorice allsorts css

hello,
I wonder if somebody can send me a suggestion to solve a css problem: I am using the theme liquorice allsorts and, while I was editing the css sheet to change the colours (I am not that skilled in these matters) the sidebar titles turned all purple and I can’t set them back to different colours as before.
can anybody tell me why is that happening? the address is http://www.factorygirl.org/factoryblog maybe I should post the code?
thank you for any help