looks photoshop'd to me personally. however, from what I have read, depending on variables in your nutes, it can cause parts of the plants to vary in color because of lack/surplus in certain chemicals. i.e. purple haze is not a strain in and of itself, merely a haze strain that was either lacking/in surplus of a certain chemical (i couldnt tell you whether its more or less of it or but you can check it out) and causes the plant to turn purple near flowering (I think! dont quote me on that last bit) cheers all