Tensen normally doesn't let me answer most of the questions because I stay drunk most of the time and tend to say the wildest things... but who cares, it's my birthday today and I'm going to anyways! *hic*
The book right now contains only d20 information for oozes but we kinda thought about a later web expansion that would allow for alternate character creation rules. The most important aspects of defining a truly heroic slime is naturally a random color chart and we are seriously leaning towards a scent chart as well...
That way it would be possible with the roll of a few dice to come up with pine scented, pale lavender-purple pudding rogue/sorcerer that you've always wanted to play!