I've set up a fillable application form inDesign CS6 to create an interactive PDF. All of text fields and buttons print as expected. However, the list boxes show up with grey or blue background colors (there are no colors set - fill or stroke.) The colors do not appear until a selection is made. When printing, a grey background appears behind the text, making in very difficult to read. I've tried editing the box after exporting to Acrobat. Still shows no fill and no stroke colors, but still prints with the grey background. Very annoying.
Screenshot of the whole window.