The "Normal" PowerPoints provide the most professional looking presentation option. The "Transparencies" PowerPoints, when printed on made-for-color transparencies using a high quality color printer, are your next best option for professional quality. If your circumstances require that you use black and white transparencies, in the PowerPoint "Print" box, be sure that "Pure Black and White" is checked under the "Color/grayscale" section at the bottom of the Print box.