While Blue Merle Australian Shepherds are undeniably attractive, it’s important to note that not all Blue Merle Australian Shepherd have the blue Merle coat. The breed also comes in striking colors like black, red, and red merle. However, the blue merle variety tends to be highly sought after for its unique and eye-catching appearance. Their coats exhibit a wide range of blue shades, from deep steel gray to a lighter slate blue hue.