The large Calamus colour dialog can be opened from modules which use a color list in a function panel.
This tiny CXmy module offers direct access to the Calamus colour
management. When you click the function icon, the Calamus colour
dialog opens (in Free colour
mode).
If you find those tiny colour pads in the colour lists of other modules too small or need a macro for opening the colour management dialog, even if no other modules with a colour list are loaded, just use this little help tool.