I would be concerned about swirled colors, basically anything up to 50073 the mohair.
I have matrix blue and midnight ice, and they look pretty darn close to the images in the PDF. One thing to warn you of, the blue in the matrix blue is translucent. Harder to tell with the midnight ice, so I don't know about that one. The translucent may or may not be something that you like.
I also have the pearl pinto and the butterscotch moss. They are pretty close to the images in the PDF. So I think the problem is only with the swirls.
It was no problem returning the ones I did not like and exchanging them for other colors. If smoe people want to see actual photos, I'll take a couple and post them.
Havent had a chance to turn them yet.