Differentiating GUI between 3 different environment is challenging in HVR. We hosted HVR in our local data center. Some one who had access to all environments ran into an issue in triggering wrong action in the wrong window. 

It would be great, if we can configure to chose different color background for each environment  or at least a highlighted color note of environment over every page of the screen (even in pop-ups such as "activate" , "refresh")