Typically you'd probably just want to adjust the hue between 0 and 1
EXAMPLE 10: "/statue [USERNAME] hue:.2 contrast:.3 posterize:3 saturation:.4 brightness:.5" shifts the hue of the image by .2, sets contrast at .3 (decreases contrast), posterizes the image with 3 levels (more levels = more colors), saturation reduced to .4, brightness reduced to .5