It’s not possible to do that. You would need to different exports. The one thing you could do is change the color of the entire 3DObject (use set color or property), or apply an effect like replaceColor or Two Color Tint.
Ah okay, thanks for letting me know! I thought the change color effect was bugged for the 3dobject but I just tried it again and it works, just doesn't display properly in the editor. Thanks again!