1. A rehabilitation display apparatus comprising: a memory that includes computer-readable instructions and that stores recorded motion images; a camera that outputs live motion images; a motion image display having a first display section and a second display section; and a processor that is configured to execute the computer-readable instructions to: output the recorded motion images; reverse the live motion images so as to form reversed motion images, the reversed motion images being line symmetric images of the live motion images; extract images having a desired skin color from the live motion images so as to form extracted images; reverse the extracted images so as to form skin color reversed motion images, the skin color reversed motion images being line symmetric images of the extracted images; and set display contents that are displayed in the first display section and the second display section, wherein the processor is configured to set one of the live motion images, the recorded motion images, the reversed motion images, and the skin color reversed motion images as the display contents in the first display section, and the processor is configured to set the one of the live motion images, the recorded motion images, the reversed motion images, and the skin color reversed motion images or another one of the live motion images, the recorded motion images, the reversed motion images, and the skin color reversed motion images as the display contents in the second display section.