Q: Why are enamel color options blue and white?
A: The blue color is due to the formulation. Usually the choice of these two colors to use concerns about cleaning and what particles could be left behind. If people are concerned with dark-colored particles which will leave on the surface, they will usually choose a white glass so they can see the particles clearly. If the particles are a lighter color, then you would choose a blue glass. Besides, if you are going to observe the reaction during operation, white glass is a bit better in terms of being able to see what is going on inside.