In this report we examine the effects of color constancy for images displayed on computer monitors, particularly CRT devices. The motivation for this work is based upon Edwin Land's Retinex Theory which attempts to explain color constancy in human perception. Using Land's theory, we can create images with a severely undersampled color space (down to a full omission of one color component) that are still appropriately interpreted by the human observer. Possible applications of this are compression schemes as well as image enhancement techniques, some of which are already known. We present a simple web-based testing scheme to verify the viability of displaying duo-chrome (e.g. extreme color undersampling) images on CRT devices in different environmental settings. Some results and possible interpretations of these results are also presented
