Researchers found that if they bombard fossils with a special type of intense x-ray, they can find the pigment's location.
We've all seen how when we splash water on cloth, the places where the water hits appear darker than the rest. Does the cloth change color when wet?
Why does the corner of the room, where two walls and the ceiling meet seem to show two different wall colors?
Are you a bird watcher? Well, you should know that a bird that appears blue is actually colorless.
If you've ever rubbed your eyes and seen faint sparkles of light, you have demonstrated a surprising fact of sensory physiology.
Clever cephalopods and colorblind camouflage champions---cuttlefish!
Your laundry is a mix of clothes of all different colors. Why, then, does the lint that collects in the lint tray always come out a bland gray?
The shift is gradual once the artist finishes, taking decades, or even centuries, but eventually colors fade, darken, or become more transparent over time.