I obtained a copy of No Shades of Grey by Rosen Trevithick during a promotional period when it was free on Amazon.com.au. The 13th to 17th February 2015 are the dates it is free so you may still be able to obtain a copy of your own if you are reading this within that time period.
The book's aim is to encourage people to respect the consent of their partner. It accomplishes this very well and even provides some humorous aspects. The "story" is only six words long. However, the book is padded with translations of all types such a haiku, crossword, hangman, textspeak and many other unusual ways to get the point across. My personal favourite is the Shakespeare translation.