I recently created a Blurb book from within LR (5.4) containing exclusively B&W images. The images in the digital preview (
http://nl.blurb.com/b/5325271-in-perspectief) are absolutely neutral including the cover photo. No color mixed in whatsoever.
The first print (printed within the Netherlands I presume) had a clear blue color cast on the cover, and the inside images had various degrees of greenish/yellowish cast. After sending color measurements and photos of pages back to blurb a second print was made. The cover was better, inside pages were different, but not OK.
Now the advice I received from Blurb is:
"However, even though the color cast has improved with a reprint of the book as-is, I recommend adjusting your black and white images by following the instructions here:
http://www.blurb.com/guides/color_management/prep_bw_pdfIn order for our printer to minimize the chance of a shift in color to show in print, we recommend removing all color from all black and white images."
To me this does not seem to make much sense if the book is to be generated straight from within Lightroom (which in itself works quite conveniently).
Any comments or suggestions will be highly appreciated.
Boudewijn Swanenburg