Well, as I've complained many times before, the camera (and in this case, possibly the sunset) reddens the petals. There's only one pink tulip there and it's the slightly larger tulip right in the middle of the picture. (It's been the only pink-among-the-nearly-black since my original 24, never multiplying, never getting removed.) The one that's 'showing off' in the foreground (left corner) is actually a purple tulip and the one in the upper right hand corner is a blueberry ripple (also called Rembrant) tulip. But in that light, the colour dif'rences are merely shades.
Too perfect? I like that ....