Hmm I thought they were slightly smaller than ousti's. @AZChamFan Has one, maybe he can help
As far as I know verrucosus are in between the size of a panther and an oustalet's, being closer to panther size. My verrucosus is around 18" now but should still have some growing to do. He is normally a combination of ivory, tan and various shades of brown........showing very little color unless he's excited about something, which is quite rare! He can indeed show very beautiful greens and blues but once again only when excited. If having a colorful cham is a priority for you, then a verrucosus probably isn't the best choice. As far as personality, mine is the very definition of calm and mellow. I have never once seen him trying to get out of his enclosure - he's incredibly relaxed and content. He has no fear of me (although I've read that they can be shy), but he is not outgoing either, so I never handle him unless necessary. He's fine with handling when it's necessary. He eats every meal from my fingers. He does like his heat and does quite a bit of basking. He was wild caught and it was quite an ordeal getting him "straightened out" in the beginning. I love him and sure wouldn't trade him for anything but at the same time I would never ever buy another verrucosus unless it was captive bred.
My Jackson's is extremely friendly and loaded with personality. I can't imagine a more perfect chameleon! He's the second I've had and the last one was the same way. He was wild caught but he came from Hawaii as did my last one. I've had no issues whatsoever with the Jackson's from Hawaii.