My text messaging/imessage text colour has changed from white to black

Is it possible that you may have "Classic Invert" set to ON?

Open Settings ➔ Accessibility ➔ Display & Text Size - Scroll down to Classic Invert and set this to OFF.

Axel F.

This has driven me crazy for the last hour so I thought I’d share that I simply turned off my phone off completely and turned it back on and now the text is white on blue again for my texts!

Thanks for the power off tip.

and after powering off and back on;

It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images / pictures speak louder than words. (Do not provide any personal credentials, such as email id, apple id, IMEI number, Serial Number, Phone number, Order ID, if you are sharing a map ensure your location is not identifiable. etc)

Perfect. Congratulations!

Axel F.