The widgets (aka "components" or "controls") in the Backbase 4 BTL namespace come in two skins out of the box: system and chameleon. Although that at least gives you some choice, chances are you still want to customize a widget's skin a bit.

This article outlines the various approaches one can take in customizing the look of Backbase 4 widgets, and discusses the pros and cons of each approach. Although it uses BTL widgets as an example, the techniques discussed apply to any Backbase 4 widget.