I'm creating a demo/educational video with footage taken from Camtasia Studio screen capture. It shows a mouse pointer moving around the screen and clicking on things. I want to highlight in yellow the button the mouse pointer is going to click on as it happens. The highlight should be transparent enough so you can still see the image underneath. I will need to use different shapes that will change as the video goes along. Obviously I realize keyframing is needed. However I don't know if the cookie cutter or compositing it the right way to go. Being that I have never dinked around with either fx I am a bit clueless on this. Any ideas, instruction or tips would be much appreciated.
thanks
jack