Some of these colors are weird. I think this could be helpful for some people, don't get me wrong, but something important to note about these color names is that most of them carry other connotations or would just be confusing.

When I see the pistachio one, I think of the actual shelled nuts, which look a bit closer to the pear or olive colors than the one actually labeled 'pistachio', which seems to refer to the color of pistachio ice cream, which looks similar enough to mint anyways. I'm sure I've seen articles of clothing that look close to the soot or grease color, but using those names would make me think of something dirty or soiled. Calling something 'lace-colored' or 'chiffon-colored' doesn't make any sense to me, since those are textiles that can be of any color. Not sure how 'medallion' would conjure an image of anything other than gold or what specific shade of yellow 'tuscan sun' would be (not to mention sounding like a house paint color), and 'candy' is really nonspecific when you think about it, or could actually be referring to candy apple red, a stupidly bright, shiny, exaggerated shade of red that doesn't really match the color labeled 'candy'. 'Anchor-colored' doesn't make any sense, all non-mocha coffee that I've seen looks pitch-black, and berry shows up twice both as red and blue. Blueberries aren't even that color, and not all berries are the same shade of red. 'Jade' as I've understood it is a pale green stone; I've never heard it used to describe black before.

I'd just stick to using plain established color names of the Roy G. Biv variety with maybe other words for connotations' sake, not necessarily to refer to a specific shade; there's no need to overcomplicate things. Most of the time, in literature, there's really no need to distinguish exact shades of, say, blue to the reader using weird, house paint-esque names.