Travelers don’t have a lot of say in how their passports look. It's hard to take a flattering picture (unless you're Prince), you can't choose which inspiration quotes frame your stamped pages, and you can’t choose the color of your passport cover. To that last point, Business Insider recently explained why passports only come in shades of red, blue, green, and black. Somewhat surprisingly, the color of your passport follows no strict system of country categorization—though that's not to say the colors are totally random, either.