So, here is my stupid n00b question:

Are the rareity of color in order of how they're desplayed on the creatu color viewer?  I ask because I see plenty of Sepia colored pets and it's next down and the DK pets are at the bottom.  It would make sense but maybe I'm reading too much into this...

Carry on!

Yes they are until it hits albino, which is the rarest /hatchable/ color. c:

The ones after the albino are Dye kit colors, where you have to buy a Dye Kit [not to be messed up with the Dye Kit Squishies!] and dye your pet that said color.
Not exactly... rare, but depends on whether people like a color more or not.
And darn those Dye Kits are expensive. D:

I hope this helped!