option to set background color

I would like to suggest an enhancement: an option to set the background to
(say) light grey.

I use vudroid to read technical documents on a 7" tablet running android 2.0.  
It works great, but starring at a white background for a long period of time 
does take a toll.  On my desktop I set xpdf's background to "-grey 65"; it 
would be great if vudroid could offer something like that.

THANKS for the great work!

Original issue reported on code.google.com by partita1...@gmail.com on 19 Sep 2010 at 8:06

kalpeshasuthar / vudroid

option to set background color #44