Experiments in 'color minimalism'.  Having become attracted to the 'minimalist' genre over recent years, I've begun to believe the concept can be applied to the color(s) incorporated into an image as well as the content.
To that end, I seek to minimize the number of colors impacting a single image and/or how little color information must be provided to enable color to remain a significant player in the image's construction, but not necessarily the dominant one.