Used a commercial service to scan documents into PDFs.
All are rendered as their original printed pages - black text on white background.
Using Adobe DC Pro to read them.
Any way to invert the document colors for High Contrast - black background, white text (example - http://globalaccessibilitynews.com/files/2013/03/Text-View.png
Edit > Preferences > Accessibility > Replace Document Colors
But, no effect. All pages remained the same. Clicked most combinations thee I could think of.
What do you think is happening?
I feel worried that the only way is to ask the vendor to rescan them all using the process described here (http://www.experts-exchange.com/Web_Development/Document_Imaging/Adobe_Acrobat/Q_28666385.html?cfr=30
). I'd need to pay for that.
Is there any way to initiate the transformation on my side? So that a PDF file, which was scanned in a standard black background, white text, can be transformed to high contract (white text, black background) using the software alone.