Started refactoring
diff --git a/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css b/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css
index 220d2ab..2afcf08 100644
--- a/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css
+++ b/gui/ngXosViews/serviceTopology/src/css/serviceTopology.css
@@ -14,6 +14,11 @@
     stroke-width: 3px;
 }
 
+.node.subscriber circle,
+.node.internet circle {
+    stroke: #ffdb07;
+}
+
 .node rect.slice-detail{
     fill: #fff;
     stroke: steelblue;