Pictures Of Dish Soap How Do I Remove Or Cover Yellow Stains On My White Refrigerator Doors?

How do I remove or cover yellow stains on my white refrigerator doors? - pictures of dish soap

I have my daughter's homework and schoolwork - Photos of construction paper and realized that sometimes leaves a yellow stain. I tried bleach, solvents, nail polish, Comet, soap dish and Softscrub. Does anyone have any suggestions?