You can customize the boot screen as well as the resume screens in Windows. You can change the image, background color, fonts and the position using this tool.
Modifies the boot animation, colors, text, and background
Modifies the resume from hibernation screen as well
Will create the animation from BMP, PNG, GIF, or TIFF images or use a single (non-animated) image
Does not require any other applications (like ImageX)
Designed to be idiot-proof by having numerous checks
Automatically backs-up the modified files
Does not require test-signing or no-integrity-checks to be enabled
Works for all versions of Windows 7: any language, any edition, 32-bit or 64-bit, RTM or SP1
In case you want the default boot screen, you can revert it back anytime using the app.
Note: Please this tool at your own risk as modifying boot screens in wrong way might prevent Windows from booting.