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.