i can't seem to get the color coding for show's correctly when using a XMLTV as EPG-source.

I edited the xmltv_categorymap.xml file, but it seems to have no effect.
what are the entries in this xml file used for when scanning the XMLTV file? i assumed it was the 'category' tag, but maybe i am wrong?
Regards,
WBMK
--edit--
see my feature request here: http://forum.dvblogic.com/viewtopic.php?f=70&t=31265&p=113215#p113215