The color of the enamel and its degree of transparency depend on the metal oxides that exist in the glass and the temperature at which the glass melts and coheres to the surface: "Harder"=fused at higher temperatures=more durable, more translucent "Softer"=fused at lower temperatures=more fragile, more opaque more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.