The GOE's bumpersticker is Black on yellow, and the message is, "If you can't stand behind them, stand in front of them."
Thanks for bumping the thread. I took a look at that bumper sticker and it does appear to be readable from far away. I’m not sure on the best colors for visaility, I was going to ask the manufacturers.
An observation, I don’t know how many of those they had printed up, but the next run they might consider adding something to it so it is more apparent it is talking about the soldiers. If it wasn’t for the ribbon, I’m not sure I would know that if I saw it on the street, and, people might not be able to make out the ribbon at all in a passing car. Maybe yellow text on a black background? That would make the yellow ribbon stand out better.
Not a criticism, just a suggestion.