hi again, thanks for the replies!
yes, that't the one. what a fine piece of art that game is, I'd say. the worlds all start in grey and then the full spectrum of the c64's 16-colour palette is used as the wizball and his sidekick colours them as the game progresses.
I get the same kind of vibe when playing Resogun as back in the days playing wizball. in regards to how well-crafted the games are.
big cheers from norway!