Print rectangle in color

Hello, I have in the drawing a rectangle in the color red that I want to print only I do not succeed.
Which settings do I have to choose here?

Do you mean you want to print only the red rectangle and not the rest? There is no direct way to do this.
Or do you mean the red rectangle is not printed at all or in grey or black?

In Print Preview:

Exactly what I was looking for. Thank you!