ColorOS

ColorOS is computer software, an operating system created by OPPO Electronics (OPPO) of Guangdong, China. It is a fork of Google's operating system Android. The major difference between Google Android and OPPO ColorOS is that the later includes some features unavailable in the former. Such features include: customizable gestures for screen off, screen on, communication, a security centre, lock screen magazines, options for long screen shot, eye protection changing to a warmer color temperature, FTP Server and others. ColorOS, in some respects, looks similar to iOS made by Apple. ColorOS was available for OnePlus smartphones from their forums page.