Color Menu
Select the colormap for the current frame. All loaded colormaps are
listed.
Invert Colormap
Toggle to invert current colormap.
Contrast Bias
Display/Set the current colormap contrast and bias
Load Colormap
Load new colormap. The standard file dialog is presented. File must the
valid Color Lookup Table.
Save Colormap
Save the current colormap as a Color Lookup Table.