diff --git a/tailbone/config.py b/tailbone/config.py
index b39a495a..aa15dc07 100644
--- a/tailbone/config.py
+++ b/tailbone/config.py
@@ -50,6 +50,7 @@ class ConfigExtension(BaseExtension):
 
         # provide default theme selection
         config.setdefault('tailbone', 'themes', 'default, falafel')
+        config.setdefault('tailbone', 'themes.expose_picker', 'true')
 
 
 def expose_vuejs_experiments(config):