Why is my keyboard color is changed?

Hi Sudeayas,

Thanks for posting in Apple Support Communities.

We see that your keyboard has a few highlighted keys. Does this behavior occur in a specific app? Force close the app and re-launch. Close an app on your iPhone or iPod touch. Restart your iPhone. If this continues, you can remove the keyboard from Settings > General > Keyboard > Keyboards > Edit and tap on the keyboard. Add the keyboard back.

Regards.