I would like to know.
How to import 3d models from Cinema 4d to Roblox with textures (multicolored)
Although I don’t use Cinema 4D, I believe in order for the mesh to display color, you would have to Vertex Paint it and upload the mesh as a .FBX file, or you would have to make a texture, upload it to the ROBLOX site, and input the link into the TextureID property of MeshPart.
If you want the colors to transfer to studio, then you’ll have to make a texture, Not the default materials. its very fast and simple. but kinda annoying to explain if you’re a beginner