diff --git a/src/theme-manager.coffee b/src/theme-manager.coffee
index 66ed646c5..8fbbea4e3 100644
--- a/src/theme-manager.coffee
+++ b/src/theme-manager.coffee
@@ -29,6 +29,10 @@ class ThemeManager
   getActiveThemes: ->
     _.clone(@activeThemes)
 
+  # Internal-only:
+  getLoadedThemes: ->
+    _.clone(@loadedThemes)
+
   # Internal-only:
   unload: ->
     removeStylesheet(@userStylesheetPath) if @userStylesheetPath?