Backdrop is a simple utility to fill your screen with a giant blank window. Fill the window with a solid color or a custom image, your choice. ALSO, includes a Fullscreen Color Cycle mode to see various colors filling your displays.

Features:
• Supports multiple displays
• Set a color or a custom image
• Fullscreen Color Cycle mode
• Remains in the background during Exposé
• Works well with Spaces

This is useful for:

• Screenshots - take screenshots of one or many windows without having to clean up your desktop
• One thing at a time - Use Backdrop in between applications to let you focus on a few windows at a time. Want just one window of an app? Switch to Backdrop, then use Expose to pick out the window.
• Web design - create a full size image with outlines of more common screen sizes to help to check how your pages will look on different monitors.
• Pixel Test - run the Pixel Test to see red, green, blue, white, and black to check for "bad" or "stuck" pixels on your displays.

Backdrop is available on the Mac App Store.

Requirements:
OS X 10.8+
64-bit Intel