fading
The gradual loss of color of a pigment or dye that
is chemically unstable. Unstable dyes or pigments
become colorless (or at least less highly colored)
compounds when they undergo chemical reactions
upon exposure to the ultraviolet radiations of
natural light, and to the oxygen, moisture, and
other elements of the atmosphere. Dyes and
pigments subject to these reactions are generally
referred to asFUGITIVE
COLORS .
There is no known way of preventing the fading of
unstable colors. (143 , 233 )
![[CoOL]](/icons/sm_cool.gif){kind=icon}