scatter3(x, y, z, pointsize, color)
The color can be the z if appropriate.
If each of the "sheets should be a different color then that could be more difficult. Perhaps using a k nearest neighbor search and some kind of region growing?
Perhaps knnsearch of random point, fit a plane, find all points within a distance of that plane, consider them to be part of the same plane, associate a label, remove those from the active set, repeat with remaining points?
