If you have photoshop or some other photo editor try the changing the colours with it. I was wondering the same thing so I retouched a photo first. Its easier to wince at a picture than at the real thing.
Original
Yellow
Original
![](http://farm2.static.flickr.com/1393/1259135844_d63d38babb.jpg)
Yellow
![](http://farm2.static.flickr.com/1151/1447433782_de71b63e1a.jpg)
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