White papers and Grey papers
While creating training material to educate project managers and technical staff on how to write technology whitepapers, I wanted to point out the difference between white and grey papers.
Klariti provides the definition of white, grey, and black papers as "There were typically three papers: white papers as we have discussed; Grey papers were for informative purposes; and Black papers detailed disavowed clandestine activities."
And then I came across this interesting article which gives some more insight. http://artsackett.com/grey_papers/why_grey.html
I guess for the marketing folks, Grey tending to White would 'work' well.