sketchbook /limited colour

Recently I have worked on a number of projects that have required a limited colour palette due to the reproduction process. Whilst I enjoy this way of working I worry sometimes it can be an 'effect' which is aesthetically pleasing but could disguise the drawing or content. To try and avoid this happening I have started a sketchbook to try to bring my initial drawings closer to the process. starting with the basic primary colours but this will develop in time