Ever felt that the colour present on the toolbars of IE or even the Windows Explorer (colour I don't even remember) is too simple and boring, then go ahead and Change it!
Run "Regedit" and go to the entry HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar
Here, right-click and create a new string value with name as "BackBitmap". Again right-click on this entry and select "Modify". In its value type in the file path of the Bitmap image you want to set in the background of the toolbars.
You can even change the caption, Windows Internet Explorer that comes on the Title bar of the Internet explorer. For this, reach
HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main
Create new string value named: Window Title set its value to the desired caption. Viola!
A little of tweaking with your computer does not cause any trouble. Your computer is made to follow you so make it do so instead of accepting the things it presents just like that!