Toggle Headlight
Setting the Display | Toggle Headlight option on the Vizex tab, in the Display group, will update the setting in the Vizex Lighting form.
Object Shininess
Use the slider bar to set the Object Shininess for objects that have a surface, such as wireframes, grids, and block models.
To revert to the default lighting, disable Light 1 through Light 4, enable the Head Light, and set the Object Shininess all the way to Matt.