is the appalachian trail all blazed the same color
Blue Blazes: A Blue Blaze is a spur trail branching off of the Appalachian Trail. Blue blazed trails could lead to a vista, water source, shelter or campground, or some unusual natural feature. The blue blazed trails may be dead ends, so that it would be an out and back walk to something like a vista.
Let me explain. When you hike the Appalachian Trail, you follow these nice neat white blazes that show you where the trail goes. Sometimes there are double blazes, indicating a turn, or a crossing. Sometimes, the blazes are practically non-existent, like in the whites. Here is a picture: White Blaze.