This is CiM 202 Hollandaise. A very saucy colour!
This is a more muted, earthy yellow, looking like Marigold with some grey added to tone it down a little. I think you could get some nice subtle shaded effects if you used this with Marigold. Maybe something to do with leaves, a leaf half and half Marigold and Hollandaise ... .
As you can see - it also reacts with Turquoise.
This is also a completely opaque colour.