Sets color of the pixel on screen.
VGA.setColor( color )
VGA.setColor( r, g, b )
r - red value
g - green value
b - blue value
none
VGA.setColor( 0xE0 ); //sets color to red
VGA.setColor( 0x1C ); //sets color to green
VGA.setColor( 0x03 ); //sets color to blue
VGA.setColor( 0, 0, 0 ); //sets color to black
VGA.setColor( 0xE0|0x03 ); //sets color to purple