This photo of Fett with Pantone color chips has been taken out of context if people are looking at it as the basis for a paint guide.
It's for licensing. They've picked out Pantone colors that approximate the costume, but they're likely FAR from accurate.
Somebody looked at a photo with a Pantone book in hand and picked those out. There's not much thought behind it.
That photo is at the end of the book in the merchandising/publicity section. The Pantone colors are a guide for licensees to know what color to make an action figure or paint Fett on a poster.
The original paint is Floquil as documented by in-progress photos of the actual costume.
Trying to follow Pantone colors would be futile.
Such simple Pantone color charts exist for all characters for use by the licensing department. I see them all the time.
They're fairly useless for prop guys like us, but good for Lucasfilm to keep the color of a character accurate on merchandise (t-shirts, umbrellas, pencil cases, bed sheets, etc). It's a worldwide color system.
