I have an idea of what you are going for. There will be multiple tints and shades of yellow, but good base to start from, will depend on which of the createx lines you use (illustration, wicked, autoair, classic).
You want a slightly greenish yellow, with a more muted reddish yellow in the shadows.
So with classic createx, you probably want to go for stock yellow with a touch of white, and a tiny itty bitty spec of green for the bright areas. Then yellow with a touch of white, and a speck of red in the main area, and then no white, more red and a very tiny bit of violet in the shadow.
If you were shooting with wicked, I'd recommend a base of wicked golden yellow, bright yellow for highlights, and then the golden yellow knocked back a bit with the tiniest amount of violet for the shadow.
Illustration colors, I'd use the yellow with a tiny bit of the magenta to orange it up a bit, then the same kind of mix as the classic createx.
There is no one "banana yellow", as in nature nothing is ever really any pure chroma. All things are a mix of colors, and much, much less saturated than we think.
Check out the color theory thread on the forum for more information on how to get to grips with color matching:
https://airbrushforum.org/threads/color-theory.12200/