Apple Shake 4 - Manual (Page 664)

664 Chapter 23 Color Correction
The bottom portion of the tab contains buttons to toggle the channels from RGB
display to a different color space model. You can display RGB, HSV, HLS, CMY, and TMV.
For example, if the current image is displayed in the RGB color model, click HSV and the
numbers are converted to HSV space. Notice the Add color does not change—only the
numerical value.
Note: The “TMV” color space is Temperature/Magenta-Cyan/Value.
When the ColorCorrect node is saved into a script, the values are always stored in
RGB space.
Each color picker has an Autokey and View Curves button associated with all three
channels for that parameter. All three channels are treated equally.