[scribus] Change in POD printers color standards.

[john Culleton]

The two large POD (digital) printers Lightning Source and
Createspace now accept PDF/X-3 files for color printing. The
advantage to using X-3 rather than X/1-a:2001 is that they do
the conversion for you: correcting for both the press and the
paper. these printers do don't share their ICC profiles with
customers. See Aaron Shepard's blog page for more details. 
http://www.newselfpublishing.com/
-- 
John Culleton
Wexford Press
Free list of books for self-publishers:
http://wexfordpress.net/shortlist.html
PDF e-book: "Create Book Covers with Scribus"
available at http://www.booklocker.com/books/4055.html