Render first values as string and place as first code,
            save, and return attr.

def _create_entry(self, name, values, fbterm=False):
        ''' Render first values as string and place as first code,
            save, and return attr.
        '''
        if fbterm:
            attr = _PaletteEntryFBTerm(self, name.upper(), ';'.join(values))
        else:
            attr = _PaletteEntry(self, name.upper(), ';'.join(values))
        setattr(self, name, attr)  # now cached
        return attr