From Carthago Software:
AeroBlend uses a quick algorithm to obtain the average color of the wallpaper or icon or window content. Color Intensity can be customized, as well as other options. It automatically changes the Windows Color to match the current wallpaper or active application icon\contents.
What's new in this version:
Version 1.2 has added an apply button to the options dialog for a quick preview and warning dialog at startup if Windows is not version 7.