An advert for The Adventures of Shark Boy & Lava Girl in 3-D promises "Shark Boy glasses for the boys and Lava Girl glasses for the girls."
At first, I was imagining something cool like each set being tuned to show off 3-D effects associated with the character in question, but now I'm thinking it'll just mean one is blue and the other is magenta. Ah, well.
The one review I read on IMDB amounted to "not as good as Spy Kids 3-D, but it kept my kid quiet."