[css-color-4] wee bit extra bs metadata

Author: svgeesus

css-color-4/Overview.bs

@@ -17,6 +17,8 @@ Ignored Terms: stacking context, double, octet
 Complain About: missing-example-ids true
 Complain About: broken-links false
 Complain About: accidental-2119 true
+Inline Github Issues: title
+Default Highlight: css
 </pre>
 
 <pre class='ignored-specs'>