Open the Control Panel or press the Windows key, type Control Panel, and then press Enter.
The color for an unpressed light button is #FFFFFF (white).You can get a sample icon from Google’s demo Click and drag the Chrome icon onto the Applications folder icon. Like I selected to customize Google Chrome with a teal color theme and all of the chrome changed into that.
Whether you're using Google Chrome on a Windows system or on a Mac, you should go find and click this button now.