There is continued interest in color. See, for example, the recent work of Pruisner (1992, 1993, 1994). Pruisner
(1994) concluded that students prefer color-cued text, and that the use of color in graphics enhances learning. Pett (1994)
reviewed the research on the use of white letters on colored backgrounds. Preferred background colors for both slides and
CRTs were found to be blue and cyan. Medium-density backgrounds were found to provide greater legibility than either
high or low density. Green and cyan provided high legibility with slides, but not on a CRT.