ColorSync in OmniGraffle Pro

What has happened to ColorSync in OG Pro? There used to be options to control this within OG but I can’t seem to find any reference to color profiles in the docs AT ALL. Has this been dropped? If so, how DOES OG handle color profiles?

This is particularly a concern to me as doing things like bitmap exports causes OG to mangle the colors (they appear to be adjusted based on the currently selected display profile).