How to Change the Background Color of a Specific Note on iPhone and iPad Launch the Notes app on your iOS device. Create a note and start typing your note, or select an existing one from the list.

How to Change the Color of Emoji on an iPhone Go to "Settings," then hit "Accessibility." Click "Display and Text Size." Go down to "Color Filters," and toggle the slider so it is on.

Click on a profile, and then in the main section of the window, you find the profile’s settings. To change the background color, click the Color & Effects button in the Background section.

Learn how to set the background color for selected text (instead of the entire document) in TextEdit ...