This PDF-Reader has the setting to change both font and Background colors
to fit whatever kind of theme you want, either black background, white text, or the default opposite or... a Cool Old Book Scent style <3 ;)
so Download Sumatra-PDF Reader from here > https://goo.gl/5IYLS0
Open The Program and follow these steps as in the pic
Sumatra-PDF > Settings > Advanced Options .
Edit those to Lines
TextColor = #000000 -> Black Font.
BackgroundColor = #F8ECC2 -> old books paper color.
حفظ = "Save"
The #F8ECC2 is the same color as the old paper books color.
and you can use whatever you like as background color or font color by changing the Hex Color from the Setting File.
you can use this Website here: http://www.color-hex.com/color/f8ecc2
to choose any color you like.
I used the color that Gives you the old feeling of
reading a Fine old book <3
Happy Reading ;) #LyJoker