On 2014-11-23 12:18, Bill Vance wrote: > > > Is there a util that will change the text and background > colors in a pdf file to something more readable? Plain > old black on white by preference. On top of my head: zathura has a 'recolor' option. (^r) https://pwmt.org/projects/zathura/ If you can find out how it works, there might be a way to change .pdf files permanently.