If you’ve set the advance behavior on any of your course slides to By User, in Articulate Presenter '09, you've probably noticed that the play button pulses in a different color when a slide finishes playing. This happens by default, as a way of signaling the learner that it's okay to click and move on.
Many designers are fine with that, but some prefer to get rid of the pulse. You can do that by simply changing the pulse color to match the regular color of the play button. That way, the pulsing will be totally invisible to the learner.
Here’s what to do: