I'd suggest to try the following approaches:
1) Use a common unused attribute for formatting the object in question (i.e. set "outputclass"=draft or "otherprops"=draft etc) and make sure Styler formats such element/tag (or any other element).
It's possible to build pretty sophisticated drafting/highlighting functionality.
2) You can also "comment out" the element in question with the "Insert - Comment" command and/or use "Insert - Instruction" command.
