Yes - colors are really just electromagnetic energy. Our eyes can only see a small portion of the electromagnetic spectrum, the visible spectrum. Each color has its own small portion of this spectrum, which ranges from 380 nm to 750 nm. In other areas of the electromagnetic spectrum, we find x-rays, microwaves, radio waves and more. Imagine if we could see all these things - it would be pretty confusing.
P retend to be holding an apple.
All the visible colors are contained in white light, and when the light hits the surface of the apple, an interesting thing happens. The pigment of the apple has the property of absorbing all wavelengths of the electromagnetic spectrum except the wavelengths of red. All other colors are absorbed by the pigment of the apple. Colors like green and blue are absorbed, and stay in the apple, never to be seen again. A nimals might see other colors than we humans do.