Update home.html

wiki/pages/home.html

@@ -62,7 +62,7 @@
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         <center>
-          <h2 style="color: #C0C0C0;">Silver Criteria </h2>
+          <h2 style="color: #6B6E6F;">Silver Criteria </h2>
           <a href="./engineering"><button>Engineering Success </button></a>
         </center>
       </div>