Toyota All Weather mats & cargo liner

I'm trying to decide on all weather mats for front/rear and cargo area for 2007 Prius. I appreciate your feedback.

I've ruled out exactmats.

Do the Toyota genuine all weather mats come in grey?
I've only seem to find them in black.

Any pros/cons of the weathertech and carbox II cargo mats/liners ?
Is the weathertech lighter in weight?
Do they fit the periphery of the cargo area with the rear seat up?
Are there pictures anywhere for either installed in a Prius 2007?

THANK YOU!