On the Huawei smartphone, you can activate the color correction, which can be very beneficial for people with poor eyesight. All the colors shown are adapted to the personal setting. The default correction modes are as follows:

Android 10 | EMUI 10.0
Step 1:  Open the  settings
Step 2:  Tap on  Accessibility features
Step 3:  Tap on  Accessibility
Step 4:  Tap on  Colour correction
Step 5:  Activate or deactivate  Colour correction
Step 6:  Tap on  Correction mode
Step 7:  Choose a  correction mode
  1. Open the settings
  2. Tap on Accessibility features
  3. Tap on Accessibility
  4. Tap on Colour correction
  5. Activate or deactivate Colour correction
  6. Tap on Correction mode
  7. Choose a correction mode

Huawei Instructions