The Transfer Student - Red on Mars

Red is so annoyed by Blue and gets saved by a message on the wall pad. Red loves living on Mars, all the grey and colours around, as long as there is no blue or green like on Earth. Why is everyone talking about Earth? She never wants to go there. Red meets her friend Lyria at one of their favorite spots and they get a drink but when Lyria tells Red her family has won the lottery and they are going to Earth, Red cannot believe it. Why would anyone want to go to Earth?