set color parameter 0 to rgb(colorpicker.r,colorpicker.g,colorpicker.b)
parameter 0 = Red Source Value
parameter 1 = GreenSource Value
parameter 2 = Blue Source Value
to change the color you need to set parameter 3,4,5
parameter 3 to colorpicker.r
parameter 4 to colorpicker.g
parameter 5 to colorpicker.b
but first you have to specify a color you want to change in parameter 0,1,2