Background!!

Not sure if this is a MDT question or not but I am trying to acheive this as part of my deployment image!

I need to change the default background colour of my Windows 7 deployment.  I have tried the CopyProfile switch to no avail.

Is there a registry key or Group Policy Object I can use to do this?

I need this set the same for ALL users of the imaged PC so that our corporate Logo will show correctly.

This is the background colour of the desktop not the logonUI.

Any thoughts?

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Rob