Ok, so I was rinsing off in the shower this morning with sunlight beaming through the window and I noticed a Double Rainbow in the mist below and I thought to myself "Double Rainbow!". Then I realised something: it wasn't a real Double Rainbow since both rainbows had their spectrum going blue to red (from the inside to the outside of the arc - right to left). So I closed one eye and sure enough, one of the rainbows vanished. It's tough being a scientist sometimes. Next, I shifted my head to the right a bit and the Double Rainbow appeared with the 2nd one having the red to blue spectrum. It doesn't take much to make some folks happy.....