When a PDF is opened, its actual background color is often white. On Windows, several PDF viewers have the ability to set the background color to another one, which doesn't modify the PDF file itself. You can just think that it adds a virtual color when a file is opened by those software. But when you open the same file by other softwares, it still has white background.
I often need to read many articles (PDF format) a day, and white background make my eyes feel uncomfortable.
Does Preview have the same feature? Or any plugin to do this?
Best Answer
So Preview does not have this feature, but more on that in a moment.
f.lux
I would strongly recommend you take a look at f.lux.
f.lux will adjust (you can modify the strength) the colour of the whole screen to make it easier on your eyes. You can set it to be on all the time, or automatically come on at night time. People love it.
Now, back to your question...
Adobe Reader for Mac does support this. Once you install the 400MB app, you can change the background colour in Preferences (⌘ cmd + ,) > * Accessibility** . Check Replace Document Colours, and set the right colours you want.