Question

Why should you stock only brightly colored bandages for first aid supplies?

Answer 1

The bright colored bandages are so appealing that even kids won't mind carrying them around in case of a small accident. The bright color also helps in maintaining  sanitary environment because, bright colors can show any slight touch of dirt, and it can be a great sign that something has been exposed to unhygienic condition. 

Answer 2

This applies more for food handlers/preparation workers. If the bandages are brightly colored then if they fall off and into food as it is being prepared then they are easily visible and can be removed immediately from the food and the food can be disposed of and remade. It is for hygiene and sanitary purposes.