A Black Metal Video?

I don't watch a lot of Headbanger's Ball, but I always assumed that there was some rule that black metal bands did not make videos.  Expecially those with CGI.  But either I'm wrong or the rule's been broken. Local band SOTHIS has released the video for the title track of De Oppresso Liber (mixed by Andy LaRoque of King Diamond), and although it surely is professionally done, my first suggestion would have been to dim the lights a bit.