Thanks. I have 2 new versions of masks created on a Mac (should work on Windows). I'm sure they could be improved by anyone wishing to make changes. I was having a problem with a white borders leaving a blurred ghost image during mask movement probably due to monitor refresh rate so I did not include them. It does not seem to effect other colors as much.
Tom
2 Masks and 2 Masks Wood
2 Masks Wood.pteeff
2 Masks.pteeff