Vertex Colors information gets eliminated in compression

I have PLY files that will be compressed with Draco. The original PLY files have all the vertex colors in them. When I am compressing those files and displaying it in the browser via threejs the colors are not showing up at all. Does Draco removes all the color information while compression?

I also tried finding the sub objects so that I could color them myself, but all the objects gets mixed in one single mesh which at least could have been used to color an/or map textures.

How to retain vextex color info with Draco