ONOS-4359: continued work on theming UI (app details panel)

Change-Id: I0961dfd6a90785b3a1dc040d500500facc8e05ed
(cherry picked from commit bb1b7a3)
diff --git a/web/gui/src/main/webapp/app/onos.css b/web/gui/src/main/webapp/app/onos.css
index 4185d67..bc11801 100644
--- a/web/gui/src/main/webapp/app/onos.css
+++ b/web/gui/src/main/webapp/app/onos.css
@@ -50,3 +50,16 @@
     font-weight: lighter;
 }
 
+
+/* TODO: dark versions for links */
+a {
+    color: #009fdb;
+    text-decoration: none;
+}
+a:hover {
+    text-decoration: underline;
+}
+a:visited {
+    color: #7fabdb;
+    text-decoration: none;
+}
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