[magick-users] pdf color invert?

[Patrick J. Collins]

Hi everyone,

I have a few pdf books but, I really have a hard time reading on a
montior with a glowing white background-- and I really would like to
inverse this to white on black..  I tried doing:

mogrify -negate DDDoA.sml.pdf

however that just left me with a black document with barely readable
text (it's extremely dark).

Any ideas?

Patrick J. Collins
http://collinatorstudios.com