Living in Colorado, we spend a fair amount of our time looking up, watching for birds, keeping an eye out for thunderstorms, and occasionally looking out for tornadoes. So, it isn’t unusual for us to also take pictures looking up towards the magnificently blue skies.  For this week’s photo challenge, look up, we chose some pictures of Aspen trees in the mountains from last September.  The golden leaves truly stand-out against the blue background.