diff --git a/web_src/less/themes/arc-green.less b/web_src/less/themes/arc-green.less
index 69e8963fbb0..c5f4a43f596 100644
--- a/web_src/less/themes/arc-green.less
+++ b/web_src/less/themes/arc-green.less
@@ -1111,6 +1111,9 @@ input {
 .lines-code .hljs {
     background-color: #2a2e3a !important;
 }
+td.blob-excerpt {
+    background-color: rgba(0, 0, 0, 0.15);
+}
 
 .code-view .active {
     background: #554a00;