INDESIGN Gray images

[Kimberley31284656nrkw]

Hi,

I use InDesign to create brochures. Now I have a problem with this document and maybe you can help.

There is a setting that makes all images gray. See image. Same picture, one gray and the other full in color. I can't find what's going on. Even when I load a new image it stays on all pages. So it's in the document.
On the image you see left a new document and right the document with grey pictures.

Has anyone ever had this?

[jmlevy]

I do not see any grey pictures in your screenshot.

[Kimberley31284656nrkw]

The left picture is bright and the right one has a grey filter over it. 

[jmlevy]

OK, you mean that the colors are dull?

It is because either overprint preview is ticked or because there is a transparent object on the page that forces InDesign to show the CMYK final result.