This is the same photo but with a palate showing every colour that’s in this photo on the right. There’s no red. But you’re still seeing red on the strawberries, right? Don’t be alarmed, so is everyone else. This is because of something called “Colour Constancy.” What’s that all about? Well, basically your brain is showing off just how smart it is. Despite the colours that we see (varying shades of blue and grey) our brain knows that strawberries are red. Even though there is no red in the photo, we perceive the image as one with red in it. Our brains are taking the grey pixels and automatically removing the bias of the blue, allowing us to see red.