diff --git a/tox.ini b/tox.ini
index 4363dbf8e..17a66b04e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -63,6 +63,12 @@ pass_env =
   USERNAME
   # Environment variables we check for
   NIPY_EXTRA_TESTS
+  # Pass user color preferences through
+  PY_COLORS
+  FORCE_COLOR
+  NO_COLOR
+  CLICOLOR
+  CLICOLOR_FORCE
 extras = test
 deps =
   # General minimum dependencies: pin based on API usage