Probably no way to do that (replicate GRACoL or a custom paper profile with an RGB profile) easily....but this might be a good case for a ColorThink Pro "ColorCast" profile. Perhaps Blurb should consider purchasing that software so they could create a ColorCast "RGB simulating CMYK" profile....otherwise, you'd simply have to soft-proof in LR using GRACoL. I think one of the questions raised though is whether Blurb should consider letting out into the wild their actual press/paper profiles....in my opinion, no, as it might create more confusion. Better to tell users to simply supply GRACoL or sRGB files and let their internal RIPs convert on the fly. Terry On Sep 7, 2012, at 2:06 PM, MARK SEGAL <mgsegal@rogers.com> wrote:
The fundamental problem is that LR only reads RGB profiles. A set of RGB profiles is needed that would replicate the characteristics of the Blurb papers, unless Adobe finds a way of getting LR to read CMYK profiles, in which case of course the onus would again be on Blurb to create relevant profiles we could use. Adobe and Blurb need to be "encouraged" to resolve this set of issues.