This is a fictional Singapore Airlines livery for the FlyJSim 737 which is based on the old Singapore Airlines scheme. This livery features outlined doors, a very colourful tail and a black and yellow cheatline. The registration is also based of a Singapore Airlines (Old Livery) Boeing 737-112 (which had blow in doors). If anyone does spot any mistakes in this repaint just comment, I'll be happy to edit anything that isn't accurate!
Have a pleasant flight!