Note: This setting is present in Avaz versions less than 6.6. For Avaz versions 6.6 and above, the Theme setting can be used for a similar purpose. Click here to see How to change the Theme or page background?
For Avaz versions less than Ver 6.6
You can turn on High Contrast for the app through Settings. This helps users with visual challenges.
Tap Settings > High Contrast = ON.
This turns the background to black color and is applicable for the picture mode and keyboard modes. Note that this feature is available for the keyboard mode from version 4.2 onward.
High Contrast applied to picture mode
High contrast applied to keyboard mode
Avaz FAQ: How to change the Theme or page background?