How do I stop ReSharper from examining .less files?

Using the "skip files and folders" feature is inconvenient because I have a very large solution with multiple websites and numerous less files amongst the various projects in different locations. I just paid for ReSharper 6 and to my dismay, all my .less files are now polluted with red wavy lines everywhere and I can't find any way to disable this. Honestly I'm happy to just disable css inspection altogether, but there doesn't seem to be any way to do it.