This is generally how I have been using CSS with my own custom framework. The benefit for me of having everything basically be variables is you can quickly mod

This is generally how I have been using CSS with my own custom framework. The benefit for me of having everything basically be variables is you can quickly modify a site to look like a different one to save time. I also have, which I think the Chrome people should offer with this, a visual settings editor on the front end for swapping/tweaking styles in real-time.