How to set Huawei's mobile phone back to black and white screen?

Huawei's mobile phone screen turns black and white. The solution is as follows:

1. Open the settings on Huawei mobile phone.

2. Click the display and brightness options in the setting interface.

3. Then you can find and click the dark mode in the interface.

4. Next, click the switch button on the right.

5. Finally, you can transfer your mobile phone back.