Okay now that this reply reminded me, I'm now looking at it without the night filter (blue light filter, eye comfort shield, flux) I can actually read it myself as well.

I didn't realise the phone reads the colour based on the filter, instead of reading the "actual" content sans the filter. So it's not as bad as I thought but one shouldn't really contrast red with green, although it's done in the industry as well.

Even as a kid I'd see the border as kind of fuzzy, that's how I realised having something "wrong" with my colour vision. (I put "wrong" in quotes because I think the red-green difference may actually be an evolutionary adaptation to recognise animals, though there's little if any proof for that).