Often I’m tasked with rendering projects where there hasn’t been a lot of Revit material hygiene, or any care put into the graphics or appearance properties of the materials. I’d find it super useful if we could leave most of the materials “white” but render a handful with colors, textures, etc. Perhaps we could use a custom material parameter in Revit to set the Rendering Style Mode on a per-material basis?
Welcome to our forum, thanks a lot for your feedback. 
This has already been requested before so there is a dedicated feature request filed for this subject on our agenda. I’ve gladly added a further upvote to the topic through your voice, and I’ve also added your feedback of course. Thanks again, enjoy your stay here.
This would be great, please add a vote from me.
Added, thanks a lot! 