Ok I'll give as much info as i can. The first phone was a Huawei mate 20 pro. How i remember it was that it was running Android 11 and there was the hype about dark mode being released. I think it was an update to android 12, and then i switched to dark mode. I think it was around that time that the writing turned white in the captions. Soon after that i moved to a pixel 4 on Android 12 which ended up updating to 13, all the time with the same symptom. Finally, a couple of weeks ago, i upgraded to pixel 7 pro, android 13. Each upgrade was a data migration from one phone to the next (so yes, i get that a factory reset and a new start would probably fix). I'm in no way a developer, or even a tinkerer, just a plain old user. Sounds like I've intrigued a couple of you, so I'll try your suggestions just to see if it leads to a win and some knowledge.