What color is the toilet slogan?

It would be nice to put a blue sign on the toilet. Blue is characterized by calmness and purity. Blue emphasizes the image of a commodity or enterprise, which is technical and efficient. It is very good to choose blue as the standard color, which can play a good role in prompting.

Slogans are posted in toilets to prevent uncivilized phenomena. You can post such a slogan: Everyone participates in sanitation work and everyone benefits from a beautiful environment.