Adjust hue. Shifts the hue of each visible pixel of the layer or composite image by the specified amount.
Hue adjustment in degrees (-180…+180 int).
Based on a 360 degree hue range.
Layer command. Applies to the current layer or to the composite image if
layer=comp. Ignored by effect layers. CMYK images or layers are converted to RGB before the operation is applied.
op_hue=0, for no change in hue.