diff -r 4543cc2049af -r d99f46b676b5 QTfrontend/model/ThemeModel.cpp
--- a/QTfrontend/model/ThemeModel.cpp	Mon Jan 21 13:04:57 2013 -0500
+++ b/QTfrontend/model/ThemeModel.cpp	Mon Jan 21 14:07:39 2013 -0500
@@ -21,6 +21,7 @@
  * @brief ThemeModel class implementation
  */
 
+#include "physfs.h"
 #include "ThemeModel.h"
 
 ThemeModel::ThemeModel(QObject *parent) :
@@ -49,9 +50,10 @@
 
 void ThemeModel::loadThemes()
 {
+    const QString appDir = QString(PHYSFS_getBaseDir());
+
     beginResetModel();
 
-
     DataManager & datamgr = DataManager::instance();
 
     QStringList themes =
@@ -73,6 +75,10 @@
 
         QMap<int, QVariant> dataset;
 
+        // detect if theme is dlc
+        QString themeDir = PHYSFS_getRealDir(QString("Themes/%1/icon.png").arg(theme).toLocal8Bit().data());
+        dataset.insert(Qt::UserRole + 2, !themeDir.startsWith(appDir));
+
         // set icon path
         dataset.insert(Qt::UserRole + 1, iconpath);
 
@@ -95,8 +101,4 @@
 
 
     endResetModel();
-}
-
-
-
-
+}
\ No newline at end of file