Camera view - Screen turns red and green

I’m not sure if I’ve changed a preference or what. When I drag with the Select or Transform tool to select more than one element, the entire screen turns red with some elements green. Any help would be appreciated. :slight_smile:

Could it be your onion skin that’s turned on, and it’s onion-skinning all your layers?

Can you perhaps link a screenshot? You can upload your screenshot to a free site like Photobucket and post the link here.