diff --git a/src/WebAppDIRAC/Lib/Conf.py b/src/WebAppDIRAC/Lib/Conf.py
index c349bf5f..7bddcb0d 100644
--- a/src/WebAppDIRAC/Lib/Conf.py
+++ b/src/WebAppDIRAC/Lib/Conf.py
@@ -238,13 +238,12 @@ def getAuthSectionForHandler(route):
     return f"{BASECS}/Access/{route}"
 
 
-@deprecated("This funtion is deprecated, use 'tabs' instead.")
 def getTheme():
-    """Get theme
+    """Get theme from config or return default
 
     :return: str
     """
-    return "tabs"
+    return getCSValue("Theme", "crisp")
 
 
 def getIcon():
diff --git a/src/WebAppDIRAC/WebApp/handler/RootHandler.py b/src/WebAppDIRAC/WebApp/handler/RootHandler.py
index c31b5637..300e5df0 100644
--- a/src/WebAppDIRAC/WebApp/handler/RootHandler.py
+++ b/src/WebAppDIRAC/WebApp/handler/RootHandler.py
@@ -159,7 +159,7 @@ def web_loginComplete(self, code: str, state: str, **kwargs):
         )
         return resp
 
-    def web_index(self, *, url_state="", theme="crisp", open_app="", **kwargs):
+    def web_index(self, *, url_state="", theme="", open_app="", **kwargs):
         """Index method
 
         :param str url_state: url state
@@ -179,6 +179,9 @@ def web_index(self, *, url_state="", theme="crisp", open_app="", **kwargs):
             except Exception:
                 gLogger.warn(f"Welcome page not found here: {welcomeFile}")
 
+        if not theme:
+            theme = Conf.getTheme()
+
         # pylint: disable=no-member
         return TornadoResponse().render(
             "root.tpl",