Fixing cloud header height issue and theme color

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/units/cdmf.unit.ui.theme/public/css/custom-desktop.css

@@ -6549,6 +6549,23 @@ select > option:hover {
     color : #C7C7C7;
 }
 
+/**
+ *
+ * Temporary navigation color fix for IoT cloud release
+ *
+ */
+
+header.header-default {
+  background: #181e22 !important;
+  height: 50px;
+}
+
+.navbar-collapse {
+  background: #37474F;
+}
+
+/** End **/
+
 /**
  *
  * Temporary responsive fix for table listing action button width issue