In the "VPN Interface Ethernet" template of one of the interfaces; under the "Tunnel" section change the color from "default" to something else.....anything else. For me, when using two broadband connections I use the "public-internet" color for one interface and then "biz-internet" for the other interface.
So using your interfaces as an example, "g0/0" would use the tunnel color "public-internet" and "g0/3" would use the tunnel color "biz-internet".