Matthew Smith 17 December 2007 Dave, Great treatise on the subject. Something to continue storing away for the next designs. Sometimes its difficult to nail why a design isn’t working. Whether its my own or someone else’s I appreciate a set of tools for analyzing and critiquing. Thanks! How important do you feel it is for a navigation system (main, sub, tertiary, etc) to utilize a consistent color scheme for unity and distinction from other elements?