rgbAdjust
Adjust red, green, blue and alpha values of an input object.
var logo = g.import('logo.svg');
logo = g.fit(logo, {x: 0, y: 0}, 130, 130);
logo = g.colorize(logo, 'lightblue', 'purple', 4);
g.rgbAdjust(logo, 0, 0, -0.5);
Parameters
v: The input object: an image, path, group or color.red: The red adjustment.green: The green adjustment.blue: The blue adjustment.alpha: The alpha adjustment (optional).