diff --git a/greenmine/base/models.py b/greenmine/base/models.py
index 7c47899b..5d2f54f8 100644
--- a/greenmine/base/models.py
+++ b/greenmine/base/models.py
@@ -46,7 +46,7 @@ def attach_unique_reference(sender, instance, **kwargs):
 
 
 class User(AbstractUser):
-    color = models.CharField(max_length=9, null=False, blank=False,
+    color = models.CharField(max_length=9, null=False, blank=False, default="#669933",
                 verbose_name=_('color'))
     description = models.TextField(null=False, blank=True,
                 verbose_name=_('description'))