Background Color Problem in PDF's

I recognized a problem in some of the PDF's on Page 9. The upper row of the tables in step 1 should have a black background and white letters but the background is white and the letters are grey so they are maybe difficult to read.

PDF's with this problem are: dutch, german ( I updatet the version and made also color the correction) and italian.

The Error can be correctet by go to the web view -> press "ctrl + p" -> save as pdf and select advanced options and select the ckeckbox "Option Backgroudgraphics" at the bottom .

[brugnara]

Thank you for pointing this out.

Have you a PR ready to be merged for this?