Hi You don't need to specify a material, if there is none a default material will be generated at runtime instead. Just set the axis colours to whatever colour you want and that's it. The Render Material field is just there if you don't like my default shader and want to write your own shader. The materials I included with the examples were meant for blocks, not grids, that's why you see only a black grid but a red sphere. (Technically the grid is dark red and if you wiggle around your directional light you can find an angle where it is properly illuminated) I'm afraid that's not possible. What you are looking for is a grid-shaped mesh that's put on top of the terrain like if you put a fishnet over am uneven surface in real life. Grid Framework is mainly a framework to do grid-based math for you with additional features like rendering and snapping added because it made sense, but it doesn't generate meshes. It would be possible to use a grid's information for generating meshes, that's what Vectrosity does after all, but I haven't looked into this possibility yet. One more thing to put on my list.