Ah, very clean photogrammetry model!
I’m not aware of any tutorials he wrote about it, what I’m suggesting is to download his project from gumroad and use that for placing your meshes into.
For the color on the 
you’d need to apply a material to the mesh. (Textures feed into Materials and Materials are assigned to meshes) - If you’re new to the engine ‘Your First Game’ is a good place to start learning.