Okay kiddo, have you ever heard of a color that doesn't actually exist in the real world? That's called an imaginary color! It's sort of like a make-believe color that we can only imagine in our minds.
Now, let me explain a little more technically. Colors that we see are actually made up of different wavelengths of light. When all the wavelengths of light are combined, it looks like white light. But if only certain wavelengths are present, we see different colors like red, blue or green.
So, an imaginary color is a color that doesn't fit into this system. It's not made up of any combination of wavelengths like other colors. Instead, it's made up of completely different kinds of light that we can't even see with our eyes!
Think of it like a special color that only exists in our imagination or in our thoughts. We can describe it, but we can't actually see it in the real world. Pretty cool, huh?