How can I change the opacity of an entire layer in InDesign CS 6? I won't be upgrading.

[The Primate]

I have a book finished, but I need to reduce the opacity of the Blurb.com gray layer so I can see how page elements fit into that layer.

Thanks,

Lou

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[Willi Adelberger · Accepted solution]

Transparency is not a layer effect, it is an object property. Select all objects of that layer and reduce the opacity.