diff --git a/common/content/style.js b/common/content/style.js
index 76291972..3281a35f 100644
--- a/common/content/style.js
+++ b/common/content/style.js
@@ -25,6 +25,8 @@ Highlights.prototype.CSS = <![CDATA[
     Object      color: maroon;
     String      color: green;
 
+    Key         font-weight: bold;
+
     Enabled     color: blue;
     Disabled    color: red;
 
diff --git a/common/content/util.js b/common/content/util.js
index 1f11bdd7..cab52eb2 100644
--- a/common/content/util.js
+++ b/common/content/util.js
@@ -514,8 +514,7 @@ const util = { //{{{
                 }
 
                 value = template.highlight(value, true, 150);
-                // FIXME: Inline style.
-                let key = <span style="font-weight: bold;">{i}</span>;
+                let key = <span highlight="Key">{i}</span>;
                 if (!isNaN(i))
                     i = parseInt(i);
                 else if (/^[A-Z_]+$/.test(i))