diff --git a/theme-arc-blue.css b/theme-arc-blue.css
index 0eff72e..9e47535 100644
--- a/theme-arc-blue.css
+++ b/theme-arc-blue.css
@@ -1116,3 +1116,20 @@
   .monaco-editor .minimap-slider, .monaco-editor .minimap-slider .minimap-slider-horizontal {
     background: #09539d66;
   }
+  .chroma {
+    background-color: inherit;
+  }
+  a.blob-excerpt {
+    background: #131;
+  }
+  .chroma .s1 {
+    color: #aaa;
+  }
+  .chroma .gd {
+    color: #faa;
+    background-color: #622;
+  }
+  .chroma .gi {
+    color: #ada;
+    background-color: #242;
+  }