Colors are an illusion created by our brains to help us make sense of the world around us. Colors are not properties of objects themselves but are created by our brains. When light hits an object, it reflects certain wavelengths. Our eyes detect these wavelengths and send signals to our brain, which interprets them as colors. So, what we perceive as "red" or "blue" is actually our brain's way of interpreting different wavelengths of light. If we take an example from nature, you may wonder why deer seem so stupid that they can't see a tiger hiding in the grass. But in reality, their eyes perceive just normal shades of green, and the tiger's stripes blend in perfectly, making it much harder for them to spot.