Nicholas Rougeux has complied a simple look at all those wonderful old colors and given examples how each is represented in pictures of every day objects, animals etc.
He also created a Public Google Doc. that gives the hex code for each of the 18th-century hues. 
I’ve been pouring over his site and the google doc. I hope you enjoy it as much as I did
Here is the first article I read about Rougeux’s take on Werner’s
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If you click on a particular color, photo examples show up
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This article brought me to Rougeux’s actual site:
This is a recreation of the original 1821 color guidebook with new cross references, photographic examples, and posters designed by Nicholas Rougeux
He also has some scans of the actual guidebook he found on Internet Archives.
The 1814 publication was also recently republished by Smithsonian Books.
