How do I Change Color of New Progress Bar

I am working with the new "Progress Bar" plugin available in r171 and would like to change the "default" color (dark blue) to another color. I do not see a property to do this - am I missing something? Is this possible?

Thanks

Yankee1950

It's styled by the browser. On other platforms it can look completely different. If you want a fixed styling, perhaps just use a tiled background and set its with to represent progress or something like that.

Thank you.