With Dapper stable release I have the same problem. I can't watch movies with normal colors in mplayer totem or xine. I think this haven't been fixed yet.
-- Xv movies on 810/i945 gives horrible color, Gamma https://launchpad.net/bugs/32963 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs