from a ? here http://www.msfn.org/board/your-seven-here-t139572-pid-920142.html/page__view__findpost__p__920142

I only done a default theme just to test in a VM so you may need a bit more work with the other non MS themes

I chose Landscape and this is how I added to xml

theme was applied

AutoUnattend.xml

    <settings pass="oobeSystem">
         <component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
            <Themes>
                <ThemeName>C:\Windows\resources\Themes\landscapes.theme</ThemeName>
                <DefaultThemesOff>false</DefaultThemesOff>
                <DesktopBackground>%WINDIR%\web\wallpaper\Landscapes\img7.jpg</DesktopBackground>
            </Themes>
        </component>

you must select img from <DesktopBackground> within your modded theme

change processorArchitecture="amd64" to your processor

Edited April 26, 201016 yr by maxXPsoft

I might be "un-solving" this one. Is there a way to choose a background COLOR instead of a picture? For example, I can select to use the Windows Classic theme, but the background color is azure. What if I wanted that to be black instead?

don't see it in the waik or unattend.chm. only WindowColor specifies the color of the window glass and color effects

probably do it with reg in firstlogoncommands

Did not know you could select a already installed theme, thought it only worked to create oem.theme...will have to run some tests

BTW would be nice if one could add more than one bg to the theme

No, this

<ThemeName>C:\Windows\resources\Themes\landscapes.theme</ThemeName>

is wrong and results in an oem theme named C:\Windows\resources\Themes\landscapes.theme, not the selected one that's already there.

<DesktopBackground>%WINDIR%\web\wallpaper\Landscapes\img7.jpg</DesktopBackground>

Well, it still gives me an additional oem theme that doesn't stick to the original theme's settings (e.g. no sounds).

Will keep on testing, though.

Any more ideas?

Edit:

Okay, for the sake of completeness, I didn't verify this with Microsoft's landscapes theme, but with an oem theme which worked out of the box. That way an additional theme entry was created (a right click offered me to remove the oem theme) instead of selecting the existing one.

Edited September 13, 201015 yr by Mikka

Also of note, this does not work, and you end up with the default Aero theme:

<ThemeName>C:\Windows\resources\Ease of Access Themes\classic.theme</ThemeName>

However, the only way to get this theme after install is to use this:

<DefaultThemesOff>true</DefaultThemesOff>

I haven't found a way to actually get one of the pre-installed themes to work, although in this case, using the second setting is fine for me.