Color is affected by the type of light in which it is viewed. Different
lighting conditions will change the appearance of the color on a proof.
For example, the colors on a proof will look different under fluorescent
lighting than when viewed under sunlight. The colors surrounding the
proof will also affect the colors of the proof. Because of the affect
that different lighting will have, a standard viewing conditions have
been established within the graphic arts industry. In order to accurately
view color, a color viewing booth is a necessary item. A proper booth
should use 5000 degree Kelvin lighting (standard daylight) with equal
color temperatures in each part of the spectrum, and no reflections
from surrounding surfaces.