For each DTD you can assign a CSS styleseet. This stylesheet can control how an element will be displayed in XML Web GUI 's editing window.
The rules are quite simple. For every element defined in the DTD you can add a style rule by typing
div.divnameOfTheElement { your style rules }For the element html of the XHTML DTD the code will look as following:
Example 3.8. DTDstyle for XHTML
.divhtml { background:#996633; }
changing XML Web GUI's global appearance. In the installation directory of XML Web GUI you will find a file called editor.css. You can also modify this file to make XML Web GUI fitting your needs.