I was at the supermarket the other day when I saw this shirt on a fellow shopper in the cereal aisle. Since I wholeheartedly agree with the sentiment, I made a mental note of the shirt and as soon as a I got home I went to find it online.
The shirt which was designed by John at The Hookshot is available on Redbubble. That means you can pick your color or even get it on items that are not t-shirts, like posters and postcards. I can only vouch for how cool the shirt is and the color I saw it in was black, which is the one I am getting.