Sorry to revive this thread, but I'm not sure if my PM got to Wilbert or not, and I don't want to nag the hell out of him directly in case it did.
All of the links in this thread redirect to
Wilbert's main page, but that page just links back to this thread.
Is the source code for Colourlike still available anywhere? I'm hoping Wilbert still has it, because I have a use for a modified version, but I don't know enough about histogram-matching to make it from scratch. (I could modify HistogramAdjust instead, but Colourlike seems to give results more like what I'm looking for).