Pretty Blue Sky

I recently watched a PS tutorial on changing a colorless sky to a pretty blue sky. Today the sky was beautiful. I knew it would be perfect for this technique. I was eager to try it but as it turns out I don't have photos with a true colorless sky. If you try this process on a blue sky with no clouds it doesn't work. I will keep this as a stock photo and you better believe I will be waiting for a day with a colorless sky.