Steve,
Not sure that's the right link. Try this:
If the grays look neutral, then the screen is good and good enough. Most FAA products, with the exception of the greeting cards and sometimes the metal prints, will be right on. But if you are concerned, grab an image you like and get a print done from FAA and see for yourself. Send a nice image that has some neutrals or whites, not a sunset or anything, so you can accurately judge.......
Rich