<p>You probably have a very distinct idea of what certain fast food chains look like, because their branding probably hasn't changed a whole lot since you were a kid. White Castles are white (of course), with little turret-like trim, while Applebee's locations tend to have hunter green design elements. But it's fun to look back and see when certain chains adopted their now-signature looks, and which have or haven't changed over the years. Here are a few of America's most beloved chains when they first debuted. Would you have given them a try on opening day?</p>