ClickForColors and using 16 colors possible?

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Here (which is the smallbench guide) says that all icons are 8 colors:
http://cd.textfiles.com/amigagames/ag-199601/MULTIMEDIA/WORKBENCH/SMALLBENCH/SmallBench.guide

I don't know the maximum but there was a nice 16 colour MagicWB palette that also had yellows, reds, blue-ish colours...