Sideways Shadows or change shadow color

Is it possible to project shadows sideways using visionosgroundingshadow or change shadow color?

It is not. VisionOSGroundingShadow (because of the limitations of the underlying GroundingShadowComponent) is strictly top-down, and doesn’t provide any control over color.

We have it on our list to add basic shadow support to the PolySpatial Lighting shader graph node. You can suggest that as a priority feature using the road map.