CSGMesh has colour in editor but not in game, how to fix?

[system]

	Attention	Topic was automatically imported from the old Question2Answer platform.
	Asked By	AirKetchPLAYZ

I Have a CSGMesh like this

With the Mesh as so

And in the editor it appears with the colour I added to it, but in the game it has no colour and is all white. It still has the correct shape though

How can I fix this?