Enabling a one color object to be recolored?

Is it possible to enable a game object to have more than one recolor without cloning it? For instance: "Magic Carpet" rug has only one color, and I can't add more.

I realize I could just clone a duplicate, but this won't work for the project I want. I have made a default override to the insect collection terrariums from Granite Falls, which works fine on all collected bugs (I changed the orange terrarium top to grey) -- but what I would really like to do is have a second recolor available in addition to this: an invisible tank recolor so that after they were collected, I could add them to a natural history museum, where I would make the entire terrarium invisible, so that I can add the insects to natural environments in the museum to look like living insect displays.

If I were to clone the insect jars to add the invisible terrarium option it would be a buy option and buying it wouldn't spawn the insects.

Thanks for taking the time to answer. Happy Simming!

Crow