set color

[heavyk]

few notes here:

1. I went ahead and called render after .color is called, but this could be unnecessary.
2. I'm a bit confused what the difference is between hue and color is.. for my use it works.
3. I an unused function rgb2hsv was added. feel free to remove it.

it appears to work, when calling color, but like I said, I'm confused what hue is ... I don't know much about colors, lol... ok well, there it is :)

peace