Everybody knows th shameless mess of Google and Bing-images. What i do and what you can do is, bring more harmony in your tiles with a "little" work in Photoshop, like this example:
It's a "little" handpainting, setup lightning and selektive colorcorrection. Hope, you like it.
My next question: Do i have now the copyright on my own work in this case?
Or, as I sometimes do, i combine google and bing images into one tile.