Earlier quoted context omitted.
I tried it, but really shouldn't have as I am colorblind and so matches were quite difficult. Some color games have an option for a colorblind-safe palette, maybe consider that?
The iPhone has built-in color filters. Have you tried using one of them?
Colorblindness isn’t exactly fixed by filters, for a few reasons. They help for some colors, but not others. And each person’s experience is different based on their specific deficiencies.
Anyway, this is a color-based game and that’s probably what it needs to be (unless size or shape could vary enough to substitute), so I’m not in the target audience.