Windows 8 bootloader icons

Hello, I just set up a system with using EasyBCD with Windows 8 and Ubuntu 13.04. Love the setup and seems to work great. The OCD in me would love to change the icon for the Ubuntu option in the Windows 8 bootloader screen. Does anyone know how to do this?

So for this screen:


I'd like to put in my own custom "metro" icon for Ubuntu.

Thanks!
-Chuck