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A great example of the effect you're describing is the Little Mermaid stage show at Disneyland. The puppeteers are dressed in all black in fabric with virtually no reflective value. The backdrop of the stage is of a similar fabric. By lighting ONLY from the front, your eye is unable to see the puppeteers who cover the stage and only the brightly colored puppets. No backlight, no side light otherwise the gig is up.
The same idea will work on video. Keep the contrast ratios high and the black will all blend together.