The Qilin LSV has Materials settings which cause it to display as much darker than other vehicles.
Attached a picture to show as an example. Both of these were made with a template that was specifically designed to match each other in brightness, contrast and colour but the Qilin is significantly darker.
Edit: This can also be noticed best in the wheels, which come standard with the Apex Samples and match between the Prowler and Qilin and display differently in-game.