diff --git a/app/components/architecture-visualisation-cytoscape/style.js b/app/components/architecture-visualisation-cytoscape/style.js
index c93398cf8f604a5548918db2e8bcbb4d7e8dc744..bf5af05f6f7c9f01a659992dd4bb21966760049b 100644
--- a/app/components/architecture-visualisation-cytoscape/style.js
+++ b/app/components/architecture-visualisation-cytoscape/style.js
@@ -50,7 +50,7 @@ $node > node { /* compounds. "Nodes" in meta model. $ selects the parent node th
     color: ${theme.serviceTextColor};
     border-color: ${theme.serviceBorderColor};
     border-style: solid;
-    border-opacity: 1;
+    border-width: 1px;
     font-weight: bold;
     shadow-blur: 0;
     shadow-color: #000;
@@ -61,7 +61,7 @@ $node > node { /* compounds. "Nodes" in meta model. $ selects the parent node th
 
 [type="communicationInstance"] {
     color: ${theme.arrowColor};
-    line-color: ${theme.arrowBorderColor};
+    line-color: ${theme.arrowLineColor};
     target-arrow-color: ${theme.arrowColor};
 }
 
diff --git a/app/components/architecture-visualisation-cytoscape/themes.js b/app/components/architecture-visualisation-cytoscape/themes.js
index c98dc909a362216bb84a80388829bdfa5a2f0c01..c6276843c584459d97431917a7dea273554ba65c 100644
--- a/app/components/architecture-visualisation-cytoscape/themes.js
+++ b/app/components/architecture-visualisation-cytoscape/themes.js
@@ -1,5 +1,5 @@
 export default {
-    'simple' :{
+    'iObserve' :{
         nodeGroupTextColor : '#333399',
         nodeGroupColor : 'white',
         nodeGroupBorderColor : '#333399',
@@ -8,9 +8,9 @@ export default {
         nodeBorderColor : '#333399',
         serviceTextColor : '#333399',
         serviceColor : 'white',
-        serviceBorderColor : '#333399',
-        arrowBorderColor : '#333399',
-        arrowColor : '#333399',
+        serviceBorderColor : '#AAA',
+        arrowLineColor : '#AAA',
+        arrowColor : '#AAA',
         arrowLabelColor: '#333399'
     },
     'arctic': {
@@ -23,7 +23,7 @@ export default {
         serviceTextColor: '#3399CC',
         serviceColor: '#E8F8FF',
         serviceBorderColor : '#E8F8FF',
-        arrowBorderColor: '#3399CC',
+        arrowLineColor: '#3399CC',
         arrowColor: '#3399CC',
         arrowLabelColor: 'black'
     },
@@ -37,7 +37,7 @@ export default {
         serviceTextColor : '#FFFEED',
         serviceColor : '#ED8910',
         serviceBorderColor : '#ED8910',
-        arrowBorderColor : '#002A4A',
+        arrowLineColor : '#002A4A',
         arrowColor : '#002A4A',
         arrowLabelColor: 'black'
     },
@@ -51,7 +51,7 @@ export default {
         serviceTextColor : '#F0E3CA',
         serviceColor : '#93A608',
         serviceBorderColor : '#93A608',
-        arrowBorderColor : '#36231B',
+        arrowLineColor : '#36231B',
         arrowColor : '#36231B',
         arrowLabelColor: '#93A608'
     },
@@ -65,7 +65,7 @@ export default {
         serviceTextColor : '#D9E8F5',
         serviceColor : '#F29F01',
         serviceBorderColor : '#F29F01',
-        arrowBorderColor : '#1D3757',
+        arrowLineColor : '#1D3757',
         arrowColor : '#1D3757',
         arrowLabelColor: '#1D3757'
     },
@@ -79,7 +79,7 @@ export default {
         serviceTextColor : '#403E21',
         serviceColor : '#AABF8A',
         serviceBorderColor : '#AABF8A',
-        arrowBorderColor : '#89888C',
+        arrowLineColor : '#89888C',
         arrowColor : '#89888C',
         arrowLabelColor: '#403E21'
     },
@@ -93,7 +93,7 @@ export default {
         serviceTextColor : 'white',
         serviceColor : '#613eb4',
         serviceBorderColor : '#613eb4',
-        arrowBorderColor : '#f2901c',
+        arrowLineColor : '#f2901c',
         arrowColor : '#f2901c',
         arrowLabelColor: 'black'
     }