My clients see color that I can't see in Acrobat
This has happened several times and I don't understand why. Forgive me if it's a simple problem.
When I create a pdf of a 4-color process mechanical from InDesign to send to my client, sometimes they see things that are not in the original files. Like, in a file I sent to them, an illustration has a white background but on their display, they see a faint gray box in the background of the image (the image box from InDesign). They will send me a screen grab and the gray box is visible, but when I check my InDesign mechanical, the original Photoshop file, and the pdf in Acrobat I see nothing. I've even used the color picker to try and find out if maybe my eyes are deceiving me, but there is no color in the background of my files.
Why are they seeing the faint gray background boxes behind illustrations? And since/if the gray boxes are not in my original pdf, how are they able to screen grab a background box that doesn't exist?
