RV Fuel Issues & Prices - Post 'Em Here!

due to the sometimes extreme differences in fuel costs between states, I think it would be nice if some organization would post a map of the US similar to the one in our signatures with states identified in green, yellow, and red, based on average comparative costs of gas/diesel. Yes I know one could research gas buddy, etc. but I would like to be able to look at a map and be able to skip the red states and at least fuel up in a yellow one, etc.
I remember years back I stopped in Florida in route to Brunswick, GA, and got hammered on the price of gasoline that would have been much less in GA. had I waited or only filled up enough to get me there.
bumpy