Under Group Policy Editor > User Configuration > Administrative Templates > Control Panel > Personalization, there is a policy called "Load a specific theme" and I have set this policy. Unfortunately, this policy doesn't seem to work on my Windows 7 Ultimate 64 bit OS

I have verified that the theme I want to set as default is valid and, I have verified that the registry key is set at HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Personalization\ThemeFile="C:\Windows\Resources\Themes\myTheme.theme"
I know the theme is good because it comes up as an installed theme if I right click on the desktop and select personalize. If I manually select this theme after creating a new user account, then my colors and wallpaper are correct. Why does the theme not come up as the default theme for a new user?
Can somebody at MSFT take a look at this?
Thank you,
erco