Hey Bob and Jobi:
They really are a lot like G. grandis and Jobi is right about most of the lizards in these genera being similar in their care requirements. The only differences could be at the micro habitat stage which could lead to a little experimentation if similar setups don't work for all species. You should have fun with these lizards as they have nice colors and interesting head shapes. As with all Gono's remember they like to have secure sight barriers in their habitat that they can retire to to be "out of sight."
If you get them let us know.
Have a Great Day!!!