Digression: If you're red/green colorbind, the https://mcbroken.com website is pure frustration. All the dots look the same to me. Fortunately the iOS accessibility color filter works wonders. After enabling that (in deutan mode) I now see green and gray/purple dots.
Red/green are pretty common status colors. What would you suggest, perhaps different shapes?
The particular color also matters a lot. Like even though I’m red/green color blind, I can still easily distinguish red/green traffic lights.