DRYer

src/pyj/book_list/main.pyj

@@ -90,7 +90,7 @@ def on_data_loaded(end_type, xhr, ev):
     if end_type is 'load':
         install_data_and_init_ui(xhr.responseText)
     else:
-        p = E.p(style='color:red; font-weight: bold; font-size:1.5em')
+        p = E.p(style='color:{}; font-weight: bold; font-size:1.5em'.format(get_color('window-error-foreground')))
         if xhr.status is 401:
             msg = _('You are not authorized to view this site')
         else:

src/pyj/book_list/theme.pyj

@@ -13,6 +13,7 @@ def get_color(name):
         'window-background': LIGHT,
         'window-background2': LIGHT_DARKER,
         'window-foreground': DARK,
+        'window-error-foreground': 'red',
 
         # Top bar specific colors
         'bar-background': DARK,