Rear Spring Shims

[rejuvinated]

My car was in an accident and lost several of the shims that go on either side of the rear spring, where it mounts to the diff. Could anyone provide me information on the specifics of those shims and where they go, abocve or below, relative to the spring? I know there are different colors that, evidently, represent different thicknesses. I'd appreciate anything, including sources of procurement, that might help me on this.

Thanks,

Bill