Firstly, thanks for the nicest op cache GUI I've ever seen :).

I'm a bit confused with the usage of green and red dots. Usually green means that something is fine, great, ok while red means that there's a problem or error.

So when I saw cache full 🔴 I was first alarmed, also because obviously a restart was pending 🔴 or maybe there was a problem with a pending restart...

... until I realized that false is just red and true is green.

What about using green for on, gray for off, and red for problems?