diff --git a/Criteria-for-a-good-color-scheme.md b/Criteria-for-a-good-color-scheme.md
index fa66b70..568a0e2 100644
--- a/Criteria-for-a-good-color-scheme.md
+++ b/Criteria-for-a-good-color-scheme.md
@@ -2,4 +2,5 @@
 2. Visual selection needs to be visible
 3. Works well for popular plugins
     - [Startify](https://github.com/mhinz/vim-startify)
-    - [signify](https://github.com/mhinz/vim-signify) (change, delete, add sign should be readable)
\ No newline at end of file
+    - [signify](https://github.com/mhinz/vim-signify) (change, delete, add sign should be readable)
+4. Sign column highlight should look good with other parts.
\ No newline at end of file