update default theme

searx/preferences.py

@@ -360,7 +360,7 @@ class Preferences(object):
                 }
             ),
             'theme': EnumStringSetting(
-                settings['ui'].get('default_theme', 'oscar'),
+                settings['ui'].get('default_theme', 'courgette'),
                 choices=themes
             ),
             'results_on_new_tab': MapSetting(

searx/settings.yml

@@ -20,7 +20,7 @@ server:
 ui:
     static_path : "" # Custom static path - leave it blank if you didn't change
     templates_path : "" # Custom templates path - leave it blank if you didn't change
-    default_theme : oscar # ui theme
+    default_theme : courgette # ui theme
     default_locale : "" # Default interface locale - leave blank to detect from browser information or use codes from the 'locales' config section
     theme_args :
         oscar_style : logicodev # default style of oscar

searx/settings_robot.yml

@@ -15,7 +15,7 @@ server:
 ui:
     static_path : ""
     templates_path : ""
-    default_theme : oscar
+    default_theme : courgette
 
 outgoing:
     request_timeout : 1.0 # seconds