diff --git a/theme-arc-blue.css b/theme-arc-blue.css
index cdda162..d9f2617 100644
--- a/theme-arc-blue.css
+++ b/theme-arc-blue.css
@@ -368,6 +368,9 @@ footer {
 .ui .info.segment.top {
     background-color: #060639 !important;
 }
+.repository .diff-file-box .file-body.file-code {
+    background: #060622;
+}
 .repository .diff-file-box .file-body.file-code .lines-num {
     color: #9e9e9e;
     background: #151825;