I have used to REATIVE AJAX add to cart addon on a couple of sites but the first thing I always want to do is change the background colour of the pop up notifications to match the style of my site.Finding where to edit this isn’t obvious to start with however the file you are looking for is called growler.js. It can be found in /skin/frontend/base/default/ajaxcart. Scroll down to line 154 and you will see where the background colours are set.
So, what do you think ?