Although it is brown when received, it can be changed to a light green colour by covering it in ectoplasm, making it a ectoplasm-covered bedsheet. To do this, players must dip it into the pool of slime on the bottom floor of the cavern beneath the Ectofuntus or dip it into a bucket of slime collected from the pool. Although this is supposed to make you resemble a ghost, when talking to residents of the port, they will merely joke at you. It is impossible to charter a ship while you are carrying a bedsheet.