Grayscale Journal
This theme has a different approach to color. The main color scheme is grays with one highlight color for links and such. Varying levels of transparency make the ‘highlight color’ appear in various shades for different page elements. In the theme options page you can input a HEX code (such as #FF0000) or a color word like ‘red’ and all the highlighted areas change to that color family. This theme is also setup for displaying thumbnails (post icons) on index pages.