Noob Question - Why does my screen look like this? Hey Blender Community, 

I have a noob question. It's very hard to google my specific question because I seem to lack the correct terminologies to things. 

Here is the question. When following a tutorial online, I realized that my render viewport looks all greyed out- not sure if this is the right terminology. From the tutorial, I'm noticing that the backdrop is darker than the file I have opened. 

Here is an image of what my screen is looking like.



Here is what another file looks like. As you notice, the background is a "darker grey"
Try each of these 4 viewport shadings, and the drop down menu will change according to the mode. From left to right: Wireframe, Solid, Material preview, and Rendered (means the scene will look close to what it will look like when you render them).