Enfocus Community

With vision difficulties, my grandpa can't read text whenever backgrounded by dark color in the PDF in the screenshot beneath. Please download it from http://www.mediafire.com/file/1iil649lu ... 9.pdf/file, or see some of its pages at https://books.google.com/books?id=WM8oC ... &q&f=false. It's too unproductive to remove each use of the dark background color one-by-one. Thus how can I, in one brisk stroke?



I've Adobe Acrobat DC Pro, Foxit PhantomPDF, and Nitro Pro. They and SensusAccess converted the PDF to a Word file's that's too deformed. Acrobat states no background to be removed.