diff --git a/greenmine/base/users/api.py b/greenmine/base/users/api.py
index fc915633..bb787505 100644
--- a/greenmine/base/users/api.py
+++ b/greenmine/base/users/api.py
@@ -150,7 +150,7 @@ class AuthViewSet(viewsets.ViewSet):
 
         serializer = UserSerializer(user)
         response_data = serializer.data
-        response_data["token"] = request.session.session_key
+        response_data["auth_token"] = request.session.session_key
         return Response(response_data)
 
     def destroy(self, request, pk=None):
diff --git a/greenmine/base/users/models.py b/greenmine/base/users/models.py
index 8f458b1b..8ffe1233 100644
--- a/greenmine/base/users/models.py
+++ b/greenmine/base/users/models.py
@@ -8,7 +8,7 @@ from greenmine.base.notifications.models import WatcherMixin
 
 
 class User(WatcherMixin, AbstractUser):
-    color = models.CharField(max_length=9, null=False, blank=False, default="#669933",
+    color = models.CharField(max_length=9, null=False, blank=True, default="#669933",
                              verbose_name=_('color'))
     description = models.TextField(null=False, blank=True,
                                    verbose_name=_('description'))