Open the Settings app
Tap Accessibility
Tap Display & Text Size
Adjust options like Bold Text, Increase Contrast, and Reduce White Point
Tap Color Filters if you want to change how colors appear on the screen
Turn on Color Filters
Choose a filter and adjust the intensity if needed
Go to Settings
Tap Wallpaper
Tap Add New Wallpaper or Choose a New Wallpaper
Select a new wallpaper color or image
Tap Set
Choose Lock Screen, Home Screen, or Both
Open the Photos app if you want to change the color of an image using editing tools
Tap Edit
Adjust filters, brightness, and saturation
Save the edited image
Go to Settings
Tap Home Screen
Change app icon appearance options if available on your iPhone model and iOS version
Use the Shortcuts app to create custom app icons with different colors
Open Shortcuts
Create a new shortcut
Add Open App action
Tap the shortcut menu
Choose Add to Home Screen
Select a custom icon and color