Final answer:
Acrylic paint is the type of paint that changes colors as it dries, but does not darken with age.
Step-by-step explanation:
The type of paint that is known to change colors quite a bit as it dries, but does not darken with age, is acrylic paint.
Acrylic paint became commercially available in the 1950's as an alternative to oils. It is made up of pigment suspended in an acrylic polymer emulsion binder and uses water as the vehicle. Acrylic paint has the body, color resonance, and durability of oils without the expense, mess, and toxicity issues of using heavy solvents to mix them. One major difference is the relatively fast drying time of acrylics. They are water-soluble, but once dry, become impervious to water or other solvents. Moreover, acrylic paints adhere to many different surfaces and are extremely durable. Acrylic impastos will not crack or yellow over time as oils sometimes do.