If you want to make sure that your company PC’s only load a very specific Windows 7 theme (your company theme only), you can use a group policy for that. I’ll explain shortly how you can do it.
Change Windows 7 Theme Permanently
If you want to load a specific Windows 7 theme EVERY time your users log on, you should follow this:
1. Step Click on “Start” and enter gpedit.msc into the search field and click on the item that appears
2. Step Uncollapse User Configuration\Administrative Templates\Control Panel\Personalization\
3. Step In the right pane, scroll down until you find the entry “Force a specific visual style or force Windows Classic”. Double-click on it.
4. Step Now check “Enabled” and enter a system path to the visual style:
5. Step Make sure the path is valid and don’t enable “Load Specific Theme (see below)” and “Force a specific visual style or force Windows Classic” at the same time.
Additionally, you might want to prevent users from changing the theme. If you want to find out how to do it, read this tutorial:
Change Theme ONCE
Load specific Windows 7 theme when the user logs on for the first time only
1. Step Click on “Start” and enter gpedit.msc into the search field and click on the item that appears
2. Step Uncollapse User Configuration\Administrative Templates\Control Panel\Personalization\
3. Step In the right pane, scroll down until you find the entry “Load a specifc theme”. Double-click on it.
4. Step Check “Enabled” and enter a path to your Windows 7 theme. As you might know, the Windows 7 theme folder is located at O:\Users\username\AppData\Local\Microsoft\Windows\Themes (Other Folder Locations)
So, you should copy your company Windows 7 theme to that path or simply enter your own path: