After emerging xorg-x11 and reemerging tpb, whenever I start it it says: Invalid xosd color "BLUE". Running with the default "BLUE". Invalid xosd shadow color "BLACK". Running with the default "BLACK". Invalid xosd outline color "BLACK". Running with the default "BLACK". Which is pretty cryptic to me. Then, the onscreen osd is white (!), and almost unreadable. xosd works well with other applications (anyway, I also tried to merge it again).
Created attachment 29627 [details] My tpbrc configuration file
Oh, it was xorg.conf that had a wrong path for rgb.txt. My fault, really really sorry. I'll go to punish myself immediately...