Colour change of text messages on A12

[surfer24]

Hi, wondered if anyone can help? Recently sent a text and instead of black it has gone a very pale yellow? 

[Slothtamerv2]

Has it sent via WiFi there's a message service like WhatsApp

[surfer24]

Yes I've used WhatsApp and that's fine it's just on sms??

[surfer24]

The recipients of the sms are receiving them in normal black text. Very annoying

[AndrewL]

@surfer24: If you head to the Messages app > Tap on a message or conversation where you have encountered the issue > Tap the 3 dots in the top right > Customise chat room, can you see the option to 'Reset' in the top right corner? If not, try heading to Settings > Accessibility > Visibility enhancements > High contrast theme, and set this to 'None' if applicable. While you're here, take a look at Colour correction, and toggle this off if it is enabled.