Can I buy rainbow currency?

Excuse me, I couldn't help but overhear your mention of "rainbow currency." Could you clarify what you mean by that? In the world of cryptocurrency and finance, I'm not familiar with a specific currency referred to as "rainbow currency." Is this a new, up-and-coming digital asset that I've somehow missed? Or perhaps it's a colloquial term for a particular type of cryptocurrency? If so, could you elaborate on its features, potential uses, and perhaps where one might go to purchase it?