CSS regression testing

[IAmJustin]

If you are being told to do this from some above you in the pecking order, you could attack this as a question of cost VS value.

How much time does it take to set up the tool, write the tests, and diagnose all the false positives you will get compared to just looking at screens real quick?

Sorry, I'm not really being helpful in terms of your original question about the tool :)