13 Anonymous In: Question-Answer Which is NOT one of the four colors used for passport covers worldwide? 13 Which is NOT one of the four colors used for passport covers worldwide? Red Blue Green White 1 Answer Voted Oldest Recent Random Best Answer Goto 2021-03-11T03:36:10+00:00Added an answer on March 11, 2021 at 3:36 am The correct answer is White. 9 Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.