I haven't finished writing my plugin, but meanwhile, I have found an alternative solution using xcalib.
Here is the script that I am using now: https://gist.github.com/hrj/6561271 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1093565 Title: Missing compiz color filter plugin since quantal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz-plugins-main/+bug/1093565/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs