Display screen

How can ı do this ?

If the holes are planar,
run the cap command, then run mergeallcoplanarfaces

then check for naked edges with showedges

I’m not trying to cover the holes, I just want the open areas to look like this.

I must be confused… are you trying to model this part with the holes as shown. or do you already have a part that you need to modify?

Open areas appear in cyan. How can I do this? I just want the appearance to be like this.

A screen with naked surfaces and open areas of different colors.
How can I do that?

ah… sorry-

change you backface settings

Kyle, there’s no surface, so it can’t be the back. It’s just empty space.
Can you look at 34:54

nope, there is a surface back there, you can see it here-

that is 100% a backface color.

image