Hi all, I'm a super newbie

So I was learning from this tutorial and I couldn't find the style used in the tutorial. I took a screenshot of it to show you what the style looks like. It's called "composing_16::9:stretch" and it's basically a frame.

I mainly want to use this style to learn composing film scenes.

If this is a custom style, can anyone provide me any resources to learn how to do this? I have SketchUp 8.

Thanks!