powershell command to determine theme used by webs or a site collection

Question

Is there a powershell command to determine the name of the theme is used by webs under a site collection? If yes, is there a powershell way to dissassociate the theme from a web or all the webs under a given site collection?

Answer 1

You can attach the object model via Powershell. There are no native cmdlets.

$site = Get-SPsite "url"
$web = $site.OpenWeb()
$theme = [Microsoft.SharePoint.Utilities.ThmxTheme]::GetManagedThemes($site)

You can then loop thru the collection to see all the themes assigned.

You can call various methods to manage your themes in this way.

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.utilities.thmxtheme_members.aspx

These are disposable object so you need to manage them or use the Start / Stop-SPAssigment

Vijai has posted some other examples for working with themes: http://www.go4sharepoint.com/Code/remove-sharepoint-site-theme-powershell-318.aspx

http://www.go4sharepoint.com/Code/change-sharepoint-site-theme-powershell-319.aspx

Answer 2

Gary Lapointe's STSADM extensions might be useful here, albeit for 2007. It looks like there's a 2010 command available here.

Here is a reference on how to set it automatically with code, it could probably be tweaked to reset it to Default.