Possible to change light sources in AR experience?

Hi folks--

Does anyone know a way to change the light source(s) used in rendering the AR experience in Thingworx View? We are having an issue where the default light (seems to be headlight?) is causing reflections or other artifacts that interfere with viewing certain detail features in the experience. Is there a way to specify the number and/or location of light sources in the experience?

I've tried modifying the light sources in Creo Illustrate before saving the PVZ, but it doesn't seem to have any effect on the rendering in Thingworx View.

--Clay