At the beginning, Angelica is cutting paper into strips with her scissors. However, notice that the paper is pink. In a following shot, the strips of paper that fell onto the ground are blue!
I saw that episode! First she was cutting blue paper which left blue pieces on the ground, on the next shot, she was cutting pink paper. That is not a slip-up!
Yeah, but the point is that is you cut up pink pieces of paper, you should see cut up pieces of paper on the ground! As far as I could see, there were no pink pieces of paper on the ground.