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.

These paintings, comparable to the Bhimbetka caves, depict animals, humans, and geometric patterns. However, they face a threat of fading, highlighting the urgent need for conservation to preserve ...

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 ...