diff --git a/theme/hacker/theme.json b/theme/hacker/theme.json
index 14f6161c0..244b494ae 100644
--- a/theme/hacker/theme.json
+++ b/theme/hacker/theme.json
@@ -1,4 +1,5 @@
 {
+    "column-left-header-background": "#035103",
     "font-size-header": "12px",
     "font-size-header-mobile": "20px",
     "font-size-button-mobile": "20px",