@jerome . I wonder about your experiment. Please have a look into the below link, and try to change the color. Is it possible to do this by using the same method you have tried.
https://www.genesis.com/us/en/2021/genesis-g70.html/#/car-configurator/G70_2021
probably …
can you please make an example like this? @jerome
Unfortunately, I don’t have time currently to code in BJS 
Thanks for your reply in your busy time schedule.
@jayakannan what are you trying to accomplish? Just changing the color of the model that was built with an SPS?
When things quiet down @jerome here is another crazy idea. With respect to optimizations, for SPS’s far away from the camera, would it be possible to generate something like a billboard (ie quad w/ texture)? The billboards could then be added to other ‘active’ sps meshes nearer to the camera, and so forth. Or maybe generating a skybox from a large surrounding SPS would make more sense?