Yeah the colorized version is the only one I played and it’s huge for a game boy game. I think it has 30 levels or something like that?
And yeah in both versions it has like six endings, most of which you find in secret worlds, and there’s at least one alternative route that doesn’t lead to a different ending, it’s just a different set of levels.
I have no idea what was in the air at the Wario Land dev team. Just endlessly intricate bits of weirdness.