I'm trying to completely replace the CSS for a domain with different CSS (i.e. swap out the CSS at gaming.SE for that of Stack Overflow). I'd ideally like an extension that lets me do this. I've used Personalized Web, which allows loading in CSS for a given domain, but it still loads the original CSS (you can specify CSS to ignore, but you have to do this rule by rule!
Does anyone know of a way of doing this?