A quick google came up with this link, which says: 
PREDEFINED COLORS 

See the file unicolor.txt for a complete list.

[download]

I guess that file comes with PDF::API2::Util
Does that help?

Cheers,
Darren :)

In reply to Re: PDF::API2 colors by McDarren
in thread PDF::API2 colors by leighsharpe

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