I've never played it but my best guess is that
you might be referring to Cosmic Osmo (not to
be confused with Cosmo's Cosmic Adventure
by Apogee - a brilliant game in itself) by
developers Cyan.

Anyway, take a look at the following site
to see if I'm right:

http://www.grenier-du-mac.net/fiches/cosmicosmo.htm

Don't miss the 'Telecharger' (download) link at the bottom :)