What's wrong with black staying black?

Why are people always saying there is a new black? Black is black, not green or brown or navy blue or hot pink or whatever the last one was.

Its just a saying because other colours start to get all popular and stuff.

lol, I know
but I guess in the fashion world temporarily, other things become as or more popular than black
hence the saying
but nothing lasts in the fashion world
so in the end black always stays as popular as it was
but every now and then something comes along that they can call the new black

It's a turn of phrase coined years ago. No need to put too much thought into it. It's not actually a gauge of things being more popular than black at all, like jazlovestoskate says.

BLACK IZ BEST AND WILL NEVER CHANGE SUCH A BEAUTIFUL COLOR

How trendy of you. It's not a beautiful color. In fact, it's the absence of color. I don't mind black at all, but saying it's beautiful is cliche.

Actually Black is considered a color
Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light.
http://en.wikipedia.org/wiki/Black
And the word black can be a noun, verb or adjective.

People who say this or that color is the new black are generally the same people that try to keep up with everyone else when it comes to fashion. These are the same idiots who walk around a while back with the John Deere Caps on.