The amount and ‘quality’ of light is what changes color perception. A big box store might have 40-80 footcandles of light at 4000k color temp [0] with a CRI (co

The amount and ‘quality’ of light is what changes color perception. A big box store might have 40-80 footcandles of light at 4000k color temp [0] with a CRI (color rendering index [1]) of 80, where 100 is the best. A sunlit room will have a CRI of 100 and hundreds to thousands of footcandles of light at 5500k color temp, which renders color vastly different than the interior of Home Depot or your local paint store. [0] https://en.m.wikipedia.org/wiki/Color_temperature https://en.m.wikipedia.org/wiki/Color_temperature [1] https://en.m.wikipedia.org/wiki/Color_rendering_index https://en.m.wikipedia.org/wiki/Color_rendering_index