Tendi applies false green to Mariner
False green was a method of artificially coloring a being's skin pigmintation to appear green, especially to impersonate an Orion.
In 2381, Ensign D'Vana Tendi applied false green to Beckett Mariner to visit an Orion Pirate Outpost without raising suspicion, though the disguise wore off and she was detected. (LD: "We'll Always Have Tom Paris")