The thing about using color *names* (following, for example, the Pantone color trend predictions) is that it's pretty easy to change just the words. Pantone says "scuba blue" will be hot in Spring 2015. Fine, it's a good color. Next fall it could be called "peacock" or "teal" or "blue green". (Depending on the monitor!)
Colors are colors. Light gray might be called "linen", "sand dollar", "glacier", "oyster gray", or "paloma". It's gray.
TheAs far as I can see, the only really handy thing about Pantone colors is that if we use their color-names, it's an additional way to be found.