Anyone here had any luck tinting or staining a clear SLA print?

Just putting out it out there, looking for advice on tinting a clear resin print dark grey or black while maintaining most of the clarity.

The effect I’m after is that of a lens out of a pair of sunglasses.

There doesn’t seem to be any services here providing print styles like this. I see transparent blue, green etc, but no black, so now looking at post-processing options.

Thanks a million!