This bug first got introduced by Apple in version 1.0.3 and is not officially acknowledged yet. They know about it however. Affected imagery so far is everything above 8-Bit per channel in image sequences.

For us this means we won’t accept Apple Looks in the store until the issue is fixed. A rendering quality like this certainly is not what your money is worth. Instead of making your life harder with clunky workarounds like pre-swapping the colors so they fit in Apple Color we’ll just wait. Maybe Apple can fix it.

The screenshot clearly shows how severe the issue at hand is.