As a developer with a red/green colorblindness, I've had to point this out to UX designers I've worked with over the years.
I ended up making a small game to show how frustrating it can be to use UIs that rely on color alone to express information.
I ended up making a small game to show how frustrating it can be to use UIs that rely on color alone to express information.
One small suggestion: keep score separately for each level so you can compare at the end and see how much icons helped.