And fading of color or ink is only the most obvious injury that light can cause ... or the deep blues of a Picasso blue-period painting, or for that matter the dark brown ink gracing the Declaration.

A golden fading sunset paints the Angeles Mountains in breathtaking, ever-shifting colors. Watch the sun cast golden light over the rugged peaks and dense woodlands of Angeles National Forest.

Most of the colors we see around us are produced by the reflection of light from pigments ... While pigmented colors have the disadvantage of fading due to ultraviolet rays, structural colors ...