[phunkyfish]

Kodi will only ever show the DVB standard genres if you want the colouring, the only other option is just displaying genre text (but no colouring in this case).

So one or the other but not both. Customising genres beyond this is not possible I’m afraid.

Your sample about is correct now but if you map text to an ID you get the text in the comment (the DVB genre), not the mapping text.