Apple Shake 4 - Manual (Page 673)

Chapter 23 Color Correction 673
Parameters
This node displays the following controls in the Parameters tab:
saturation
Removes saturation from the hue range you identify.
satLimit
Sets the limit for saturation values.
rSuppress
Removes red from the hue area you identify when you drag the control point
downward.
rHue
Adds red to the hue range you identify.
luminance
Removes luminance from your area.
gSuppress
Removes green from the hue area you identify when you drag the control point
downward.