RGB Geotriff surface from a grid

I have created an elevation grid from a lidar
point cloud. I also have a UAV aerial that I want to color the grid with.
The end goal is to export a surface GeoTIFF that can be displayed using the colors from the aerial.
My client finds it easier to navigate the project.
The end goal is to export a surface GeoTIFF that can be displayed using the colors from the aerial.
My client finds it easier to navigate the project.
Answers
That is not possible for geotiff files (as far as I know).
One close thing to this would be using a 3D pdf that would do the work for small areas.
Attached a small sample 3Dpdf file