That said, the very idea of a "favourite" key-signature is broadly analogous to that of having a "favourite" composer, which says it all, really
I'm not entirely sure it says it all - nor would I agree with your analogy ;)
The concept of key-colour is very well established, and not nearly as random as you suggest. How any keys are there? 24, major and minor. But how many composers are there, from whom to choose a favourite? ;)
If you're going to the George tomorrow, you could tell me more about it then?
