When I started using storyboard pro and also demonstrated in the tutorial videos when drawing on a layer the other layers will go automatically go grey making it easier to focus on what you are drawing on a specific layer.
But I don’t know what I’ve done but when I opened up the program the lines remain solid black on every layer 
I know you can manually lower the opacity but I liked this automatic function as it made working on the panels a lot easier.
Does anyone know how to restore this? I’m very new to the program Hope this makes sense