If you’re that rare aspirant who’ll take the time to make intricate folds necessary to construct the most badass paper airplane on the tarmac, Krstic will show you (in a 14-minute video) how ...

Click the "Texture Tab" on the Fill Effects pop-up window. Scroll to the "Newsprint" box and click on it. Click the "OK" button and the paper's background now has the grayish newspaper look.