Use a darker shade of blue for hyperlinks.

As LOOT itself does. The lighter blue is less visible against a light
background.

css/style.css

@@ -85,7 +85,7 @@ html {
 /* Misc */
 a {
     text-decoration:none;
-    color: #64B5F6;
+    color: #2196F3;
 }
 a:hover {
     text-decoration: underline;
@@ -173,4 +173,4 @@ nav > .divider {
 /* Greyscale non-Polymer icons. */
 core-icon[src] {
     opacity: 0.54;
-}
+}