The full location and full code are already mentioned in my first reply in this thread.
It will work if implemented correctly. Some basic coding knowledge is required to do this. To save yourself time I suggest hiring some developer to login to your server and do this for you using this forum: http://support.forcg.com/forum/hire-developer
Please understand that I'm unable to write step by step tutorial on how to modify code. I provided you file and CSS class with color code. That's all I can do. Everything else is just a matter of modifying it in text editor and re-saving on server or under [Daisho > General > Custom CSS Code].