"Background color" refers to the color that appears behind the main content or objects on a screen or in a document. It is the color that fills the entire space, creating a backdrop for the other elements to stand out. Full definition
Then the ability to choose background color of font color would be an added plus. (goodereader.com)
In the den, enjoy the aesthetic of a nice wood accent wall along with an electric fireplace, which can conveniently change background colors. (wyndhamvacationrentals.com)
The off white background color in the clutch is the same as the white stripe on my shirt! (sabbystyle.com)