Something like this?

http://alpercakici.deviantart.com/art/V7-D...te-v2-187213962

For how to change the icon ,

1)Make the application shortcut somewhere [eg : desktop ]
2)Change the application shortcut icon with the one you wanted.
3)Unpin the current application shortcut in the taskbar.
4)Pin the one that you changed icon.
5)Delete the shortcut that you made earlier.