how to view dense cloud colors with vertices only?

Hi, i did a photographer, and i want to split it in to 5 mm pieces then print it out.
so my plan was to import it into blender, then manually slice points, then render and print it out. but because they are only vertices, i can seem to render or view any colors of it…

how do i do that? i currently have a .ply file with vertex colors enabled

Thanks