May 2007

Guide to Acceptable Use of Color in "(Color online)" Figures

Figures submitted as color PostScript (or EPS) files will be published online in color at no extra charge to the author. Care should be taken to ensure that captions and text references to the figures are appropriate for both the online color and print grayscale versions, and that the figure will be sufficiently clear in both versions. We suggest captions contain phrasing such as "... the red (dark gray) line ..." as well as beginning with "(Color online)".

As submitted in color	As submitted in grayscale

Example 1a – NOT acceptable in grayscale (red and blue lines indistinguishable)

Example 1b – Acceptable in grayscale (alternatively, each line could be labeled)

Example 2a – NOT acceptable in grayscale (red, green, and blue squares indistinguishable)

Example 2b – Acceptable in grayscale