Such as making them all colored all the time? Yes. but be very careful. You can download and install a utility called Resource Hacker. Then go into Browseui.dll and remove the grey toolbar bitmap and replace it with the same one, only in color. I will give you a link to a site called Virtual Plastic. It has the information you are looking for. Be sure to make a backup of this file and know the DOS command to put it back in case you hose the project and cannot get back into windows. I changed my toolbar to colored buttons. I changed it back because I found it was hard on my eyes.
http://www.virtualplastic.org/html/art_hack.html
If you are not comfortabel, don't do it.
Also, if you want to have IE toolbar Wallpaper, download this utility and use it.
http://www.microsoft.com/windows/ie/previous/webaccess/default.asp
Look for Toolbar Wallpaper. This works for IE 6 too.
If you want toolbar Wallpaper for Your regular windows folders that's possible too.
Here's how:
Open the registry and go to:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar
Click on toolbar. In the right pane create a new string value. Name it BackBitmap EDIT: Sorry. I typo'd in the registry file.
Double click on it to modify.
Modify it to the path of the bitmap you would like to use.
For instance C:\windows\clouds.bmp