I'd get too confused using all green money, it's hard to know what's what just by opening your purse, up in Canada you open your purse and you know the blue colour is the 5 dollar bill and the green one is a twenty, and I think the purple one is a ten dollar bill and it makes it so much less complicated!
I did remember being in the US years ago as a kid and handing a teller a $2.00 bill, and she just looked at us like it was some prank or something, but we got that $2.00 from the bank before we went down to Darrin Lake in Buffalo!
Colored money is something the States should of had for years now!
