diff --git a/static/themes/matrix.css b/static/themes/matrix.css
index fb19538f6..d2dd17cf9 100644
--- a/static/themes/matrix.css
+++ b/static/themes/matrix.css
@@ -2,7 +2,7 @@
   --bg-color: #000000;
   --main-color: #15ff00;
   --caret-color: #15ff00;
-  --sub-color: #032700;
+  --sub-color: #003B00;
   --text-color: #adffa7;
   --error-color: #da3333;
   --error-extra-color: #791717;