Genesis 8F chipped nails Beta

StratDragon

Pre Manicure Pedicure Test Beta for Genesis 8

surface materal preset
requires Genesis 8 Female
version date 20.10.8

I'm trying to make a nail polish overlay for Genesis 8 Female that adds an displacement overlay to add realism.
the issue I'm running into is when I use light colors as the metallic material surface they look fine, but if I use darker colors they fade closer to gray.
I would like to avoid using textures for color swatches if it's possible.

The discussion can be found here:
https://www.daz3d.com/forums/discussion/441567/iray-materials-question-for-fingernail-and-beta-freebie

test file is here:
https://www.deviantart.com/stratdragon/art/Gen8FPreManiPedi-857381946