Facebook's theme is blue because Mark Zuckerberg, the creator, suffers from red-green colour blindness. Also, if you type @ [4:0] and remove the space between @ and [, his name will appear.
In Dubai, you can watch two full sunsets - first, a sunset can be viewed at ground level, with it being possible to watch the sunset all over again by going to the top the Burj Khalifa (The world's tallest building)
~cool... masha'allah!