Blue is different. When people are blue, or have got the blues, it means they feel sad. They might listen
to blues music, which usually tells sad stories. Blue isn't always a sad color, though. If something good
happens to you when you're not expecting it, like when you get a good idea, or if you run into an old
friend, you can say it happened out o f the blue.
Green is another color that can have very different meanings. In the past, being green was almost always
something negative. For example, if you ride on a boat and feel seasick, your face may look green. If
someone has something nice that you really want, like a new car or an expensive watch, you may also be
green with envy. Or if you are starting a new job, your boss may say you are green, which means that
you don't have any experience.