Colors Express Moods?

I was wondering,why do people say that when they're wearing black that means they're in a bad mood? Well, I'm happy today and I'm wearing black, cuz it's my favorite color so it makes me happy! I might feel sad tomorrow and wear sth white! Colors are not moods, they can lie and fool u, like if u see someone wearing bright colors all the time, it could mean that they are hiding their sorrow inside, like a smile could hide a tear, and a laugh could hide a scream.. Black could be happy, and white could be sad, WE make colors..they don't make us.