This should help :D
To change the color of the icons on desktop to transparent = Right-click My Computer. Choose Properties. Click on the Advanced tab. Under Performance, click on Settings. Scroll down until you see "Use drop shadows for icon labels on the desktop", and put a check next to it.
Make sure that Lock Web Items on Desktop is un-checked.
Tranparent Icons.
Start
Control Panel
Performance and Maintenance(if in Category View)
System
Advanced Tab
under Performance click on Settings
Visual Effects Tab
put a check next to
"Use drop down shadows for icon labels on the desktop"
Apply / Ok
If this still doesn't work,
right-click on the desktop
point to Arrange Icons By >
and make sure that Lock Web Items on Desktop is un-checked.
If you have Desktop settings set to "Lock Desktop Items"
you can't remove the background color
Right click on desktop
Properties
Desktop Tab
Customize Desktop button
Web Tab
and take the check out of "Lock Desktop Items"
Ok / Apply / Ok