BACKUP STYLESHEET BEFORE PROCEEDING FURTHER:

The styles that govern how this PDF document will display are managed in Stylesheets.

In Stylesheets, navigate to Form Display, then click on BBFormDisplayPrintContainer

The following example shows how to change the background color to white and the text color to black. Inside of the BBFormDisplayPrintContainer on the right side of the page enter the following:

BBFormDisplayPrintContainer {
background-color: #fff;
color: #000;
}