Experimental: CSS Var Theme Builder

Theme Builder shows examples of custom themes and the files needed to create them. In this experimental version of the Theme Builder we are using custom properties, aka css variables, for most of the theming. Currently you can only look at the CSS var version of theme builder online, but in a future release you will be able to run it on your local machine to create your own custom theme (or edit one of the existing demo custom themes). Go to the Live Demo and hit the "Tour" button for details on how to use Theme Builder.