Music transcends colour.
I think we'd all agree that music makes the world a better place, but how could we be making the world a better place with key signatures?
First, what is a key signature, a flat note or sharp note?
A key signature is a family of notes.
Each note within it is like an immediate family member and all notes outside of these are an extended family.
All the notes and keys on the piano are related just as everyone of us are related.
One human race made up of many smaller families.
We can get along in harmony when we understand that we're all one family.
Music is awesome!