Originally Posted by Flick Montana
I'm pretty sure it was made by the Mars Society to show the changing of Mars from red (current state) to green (terraforming) to blue (earth-like). But I could be wrong. I remember seeing some concept art a while back from different groups before they revealed it. But that was back when I was in high school and it was a big deal. Some schools were even designing flags for it.
Ahh that would make sense