diff --git a/rscli/cli.py b/rscli/cli.py
index efa9bcf..d3b5892 100644
--- a/rscli/cli.py
+++ b/rscli/cli.py
@@ -9,8 +9,11 @@ from rscli.httputils import req
 
 try:
     from colors import color
+    has_colors = True
 except ImportError:
+    has_colors = False
 
+if not has_colors or not sys.stdout.isatty():
     def color(text, *args, **kwargs):
         return text