jit.hue performs a hue rotation on the incoming matrix while preserving luminance values.
Tutorial 14: Matrix Positioning uses the line object to automate rotation of the hue angle.
The jit.rgb2hsl object allows you to directly manipulate the hue plane of an image. Just remember that in most cases you will want to convert it back with jit.hsl2rgb. See the help patch for jit.rgb2hsl for more info.
./examples/jitter-examples/video/quicktime/jit.qtfx.helpers/jit.qtfx.hslb.maxhelp shows how to manage hue using jit.qt.effect.
(please list things that you believe to be errors or omissions from the existing refpage)