diff --git a/apps/drivermatrix/src/main/resources/app/view/driverMatrix/driverMatrix.css b/apps/drivermatrix/src/main/resources/app/view/driverMatrix/driverMatrix.css
index 441f129..ae1d403 100644
--- a/apps/drivermatrix/src/main/resources/app/view/driverMatrix/driverMatrix.css
+++ b/apps/drivermatrix/src/main/resources/app/view/driverMatrix/driverMatrix.css
@@ -4,6 +4,12 @@
     display: inline-block;
 }
 
+#ov-driver-matrix .driver-matrix {
+    /* FIXME: demo only, need a proper scrolling solution */
+    height: 600px;
+    overflow: scroll;
+}
+
 #ov-driver-matrix table {
     margin-left: 20px;
 }
@@ -12,10 +18,10 @@
     border-collapse: collapse;
 }
 #ov-driver-matrix .table-header-rotated td {
-    width: 30px;
+    width: 24px;
 }
 #ov-driver-matrix .table-header-rotated td.xmark {
-    background-color: yellow;
+    background-color: rgba(200, 85, 85, 0.5);
 }
 #ov-driver-matrix .table-header-rotated td {
     text-align: center;
@@ -25,6 +31,7 @@
 #ov-driver-matrix .table-header-rotated th.rotate {
     height: 140px;
     white-space: nowrap;
+    font-size: 10pt;
 }
 #ov-driver-matrix .table-header-rotated th.rotate > div {
     -webkit-transform: translate(25px, 51px) rotate(-45deg);
diff --git a/tools/test/cells/simon-uk b/tools/test/cells/simon-uk
index ff82928..be79afc 100644
--- a/tools/test/cells/simon-uk
+++ b/tools/test/cells/simon-uk
@@ -34,7 +34,8 @@
 ## credentials for logging into ONOS instances
 export ONOS_USER=sdn
 
-export ONOS_APPS="drivers,openflow,proxyarp,fwd"
+## the apps we want activated at startup
+export ONOS_APPS="drivers,openflow,proxyarp,drivermatrix"
 
 ## mininet VM
 export OCN="192.168.56.103"