diff --git a/data/patch/31-4/colon-removal.py b/data/patch/31-4/colon-removal.py
new file mode 100755
index 0000000..c12cba0
--- /dev/null
+++ b/data/patch/31-4/colon-removal.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+# # -*- coding: utf-8 -*-
+
+import re
+import sys
+
+sys.path.append("../../convert/31-4")
+from db import *
+
+db.bind(provider="sqlite", filename="../../clean/31-4/data.sqlite3")
+db.generate_mapping()
+
+with db_session:
+    for i in Outfit.select():
+        i.name = re.sub(r"(.+?)：(.*)", r"\2\1", i.name)