Comment 5 for bug 138015

I have already reported this in the gimp bugzilla and on lcms mailing list. It seems it is a problem with the way lcms (the colour management library used by both gimp and cinepaint) handles icc v4 profiles. See http://<email address hidden>/msg02122.html, for instance. Meanwhile you could try building a profile for the Huey with the Argyll cms beta 7:
http://www.freelists.org/archives/argyllcms/10-2007/msg00031.html