Open the Settings app
Tap Accessibility
Tap Display & Text Size
Adjust options like Increase Contrast, Reduce White Point, or Color Filters
Tap Color Filters if you want to change the screen color appearance
Turn on Color Filters
Choose a filter and adjust the intensity
Open the app you want to use
Change the app’s theme if the app supports dark mode or color settings
Go to Settings
Tap Display & Brightness
Select Light or Dark mode
Check the app’s own settings for appearance or theme options
Use Shortcuts app if you want to create custom app icons with different colors
Open Shortcuts
Create a new shortcut for the app
Add the Open App action
Choose the app
Add the shortcut to your Home Screen with a custom icon color
Use a third-party widget or icon app if needed