Embodiments related to improving a color-resolving ability of a user of a see-thru display device are disclosed. For example, one disclosed embodiment includes, on a see-thru display device, constructing and displaying virtual imagery to superpose onto real imagery sighted by the user through the see-thru display device. The virtual imagery is configured to accentuate a locus of the real imagery of a color poorly distinguishable by the user. Such virtual imagery is then displayed by superposing it onto the real imagery, in registry with the real imagery, in a field of view of the user.