Available Overlays?

Has anyone come across usable overlays for CO5 or CO6? I have a couple of PNG/JPEG Fibonacci based Spirals/Golden Mean, but they are not quite sized properly...perhaps it is the camera sensor size that is the issue. I have been playing around with the Fibobacci spiral for composition lately and have been pleased by the results. Just wondering if there are a gathering of overlays somewhere...Lightroom seems to address this a bit better, but I would rather stick with CO6