Method Image.Image()->change_color()

Method change_color: object change_color(int tor, int tog, int tob)
object change_color(int fromr, int fromg, int fromb, int tor, int tog, int tob)
Description: Changes one color (exact match) to another. If non-exact-match is preferred, check distancesq and paste_alpha_color.
Parameter tor
Parameter tog
Parameter tob: destination color and next current color
Parameter fromr
Parameter fromg
Parameter fromb: source color, default is current color
Returns: a new (the destination) image object