Is it possible to just click on the header in the design and click a Custom style. Put everything you want in the custom style and save it! Right now it does not seem to work that way. If the text in the header needs to be changed, then you need to create new styles for font and color and put it in the <h1/>.
Is there some document that describes everything that you can add to customize a header using the style designer?
The other question is once you remove a class for the header, the page becomes completely unresponsive to any other UI changes? I suppose this is by design.