highlighting - tab/trailing etc

Regardless of which colors I set (eg, the default1 color scheme) the "tab"
and "trailing_whitespace" do not seem to be highlighted.

Is there a flag or something that I'm missing?

Version: [x]jed 0.99.19-78 and -95
S-Lang 2.0.6 and 2.1.1-136
OS: SuSE 10.0 SuSE 10.2

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