The Dots game just solved the color blind problem, http://blog.weplaydots.com/post/92736184749/whats-new-in-two.... Although I am not colorblind so can't speak from experience.

Yup, their solution was our first thought as well. The biggest problem is half our game is about ordering colors based on the color wheel. So Red Orange Yellow.

That doesn't pose the same challenge if that run corresponds to Square, Circle, Triangle. Trying to remember a sequence based on random shapes seems too unrelated. We'll need to do some tests with color saturation most likely.