Emerald Driver, changing colors works good, although the colors on the screen don't seem to be quite the colors I'm getting on the saber, but it's close enough.
That's because your computer can only display a little over 16 million colors. Sound like a lot? Nowhere near what the human eye can distinguish. So, it will look slightly different in real life. Other settings, like the gamma setting on your screen, and so on will affect how colors look on it.