Multispectral imaging will certainly provide an excellent solution to color problems in medicine, and may have significant impacts in many aspects of medicine, so that the realization of individual improvement forms a complicated network. Specific reports on the concrete medical problems that will be solved by a specific multispectral technology will therefore be indispensable. It is also important to understand some specific principles are appropriate from a marketing viewpoint for the chaotic medical field. Based on these considerations, two promising medical applications of multispectral imaging are proposed; digital images with spectral reflectance for each pixel, and digital images that are very accurate reproductions of real objects. The first technology will lead to new morphological diagnostic methods more powerful than human visual perception alone, and possibly even to the discovery of the mechanism of human color recognition, while the second advance will lead to a major improvement in the diagnostic reliability of digital color images and wider medical adoption of digital technology. The former will require considerable investment but will provide significant improvements in diagnostic ability, particularly for rare diseases, while the latter will provide practical and general improvements in medicine at relatively low cost.