How can I set the color outside the body area limits to light gray? See www.vanheun.com ; now it is white. Thanks, Martin

You set a background color in ATO>Body, Text, & Links>Body Style

This also changes the background color of the side columns and header area. I only want to change he background color outside the gray borders

After changing the body background color you have to change other background colors depending on your needs. In your case just adding a background color to ATO>Style & configure layout>Layout Container Style should work.

Yes, very good. Item solved! Thanks, Martin.