install xubuntu 14.04 , but when playing movies the image is green. can be investigated and the video output should be in x11 (XCB), in vlc and it worked. as you can do the same with Parole?
By default, Parole always uses the XV output. X11 is only a fallback option that you can set when starting parole from the commandline (parole --xv=false). I cannot reproduce your issue with the green video. Are you sure you didn't touch the video effects? (tools > preferences > display > hue) Does it work normally with totem?
Could you try to use the clutter backend of Parole to see whether this bug still appears? I've never been able to reproduce it, but it sounds a bit like https://bugzilla.xfce.org/show_bug.cgi?id=10843
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