def cmyk_to_rgb(c, m, y, k):
r = <NUM_LIT:1.0> - min(<NUM_LIT:1.0>, c + k)<EOL>g = <NUM_LIT:1.0> - min(<NUM_LIT:1.0>, m + k)<EOL>b = <NUM_LIT:1.0> - min(<NUM_LIT:1.0>, y + k)<EOL>return r, g, b<EOL>
Cyan, magenta, yellow, black to red, green, blue.
    ReportLab, http://www.koders.com/python/fid5C006F554616848C01AC7CB96C21426B69D2E5A9.aspx
    Results will differ from the way NSColor converts color spaces.