clean up background color of device list

public/main.css

@@ -28,7 +28,7 @@ img { float: left; padding: 0px; margin: 0px; margin-right: 5px; }
 .mainView {  min-width: 600px; background-color: #660; margin: 5px; flex-grow: 1; }
 
 .productImageSmall { height: 50px; }
-.productList { min-width: 300px; overflow: auto; background-color: #00a; margin: 5px; }
+.productList { min-width: 300px; overflow: auto; margin: 5px; }
 .productListItem { min-height: 50px; }
 .padding { padding: 5px; }