I've tried the color wash several different ways but can't seem to get one color (white) to stick and change the alternate color.
The problem with fading out one effect and fading in another effect is, that if the lengths of times are different for each time you want to use the effect, you have to adjust the fade times. I couldn't get all of the alternate color to disappear when trying this.
Steve, your first idea was close, but again, I had the alternate color mixed in. The bad thing is that the save times jumped up ten fold. It is only a two layer effect, but I will keep working on these ideas.