The annual report of the Kölner Freiwilligen Agentur (Cologne Volunteer Center) provides an overview of voluntary work in Cologne. It is an example of how finishing techniques do not always require a large budget. Two different types of paper, uncoated for the figures section, plain paper for the remaining pages, also distinguish the various contents optically and haptically. The defining design feature is the use of mauve as a special color. A different special color for the inside pages and the glued fold of the spine will be used for each annual report. Over the years, this will result in a rainbow color sequence.