I use Tiger and the Mail application that came with it. I recently received a mail that was "labelled" in a colour (ocra/yellow). In all mail programs I've ever used, I could easily remove this colour label through the available menues. In Mail, this doesn't seem to be possible. The only thing I can find is "mark" and "flag", but no "label". I've looked in vain through all menues and preferences panels, but can't find anything. Where is it?