Every color has already been defined by RGB, CMKY and/or other color models. And even if it hadn't... good luck displaying one on here because RGB (well, equivelent hex codes) are what HTML uses to display colors.
Now, if you're trying to come up with new color names... I recommend doing some crack, getting a dictionary and a bunch of color samples. Seriously, I have no idea how they come up with some of the color names... it's ridiculous. For example... there is a Sherwin-Williams color called "Nut Meat"... wtf?