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You can use the Mapper to affect any grid or particle channel.

The video to the right shows the Mapper affecting the Grid RGB Channel instead of the Smoke density grid channel, and a V-Ray User Color texture with a solid Green color set as the Map parameter for the Mapper.

Once the smoke passes through the volume of the sphere geometry, it inherits the RGB color set by the Mapper for that region of the Simulator.

For this setup to work, a Phoenix FD Source is created to emit Smoke and RGB (the color is set to Gray). On the Phoenix FD Simulator → Output roll-out, RGB Grid Channel export is Enabled.

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0PHXMY_Mapper_result.mp4
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