The program lets you change various system colors by making changes to the registry. Well, Classic Color Panel can do that for you. But still those settings are available but that requires some changes in the registry. Windows 10 ruled out many color based customizations earlier available. So, did you ever wanted to change the default colors that programs generally use? This post covers two small utilities named Classic Color Panel and System Font Size Changer that let you change colors for system elements and font sizes on Windows 10. But not many options are available or provided by Windows under Settings. Customizing the visuals of your PC is the one thing that every Windows user tries to do.