Xodo: Adding Favorite Colors
1. Go to the custom Color Picker.
2. Swipe to the first screen.
3. Open your favorite color editor by pressing the Add button.
4. Alternatively, you can long-press a color and tap the Edit button in the toolbar.
5. Choose the color you like by tapping on the button. After finishing, tap DONE or SELECT THIS COLOR to add those colors to your favorite list.