What is a full-spectrum paint and what is it good for?
The term “full-spectrum paint” makes no technical sense, but an internet search turned up some paints being marketed with this term. Apparently full-spectrum paint is paint in which no black pigments are used to create the final color mixture. A given paint color could be formulated from a mixture of white, black, and one or two chromatic pigments or from a mixture of several chromatic pigments with white. This later mixture is what is being marketed as “full-spectrum” paint. There is probably little practical difference between the two methods for producing a given color. However, the paints would most likely have different spectral reflectance properties (neither is more “full” than the other) that would make them behave differently when the color of the illumination is changed or when the paint reflects upon itself (as in the corner of a room). These differences are likely to be very subtle and go unnoticed by most people. It’s just a different way to formulate certain colors and fu
