I go by either name actually :).
Yon Gloaming was originally a silk ribbon color and we pestered Vikki like mad, over-sugared children until she created a floss in the same color.
I just found one more blackish color upstairs. Mermaid Blue 2331/Magpie Tears 2351 wet sprayed with Basic Black 5300. We went through a wet sprayed with black craze there for awhile, lol.
I took photos of four colors upstairs, I have no idea how they will look, especially since I have to keep the file size small, but here goes:
(Top to bottom: Yon Gloaming, 5143/ws5300, OMOT Night (for comparison), 2351/2331/ws5300)