My VW’s the same, although the car’s a couple of years old and doesn’t have the latest generation of VAG tech / software (mine works as it should and is free of bugs and gremlins!). It doesn’t bother me the image is a different colour to my car as I rarely access the screens with the image of the car displayed.
Maybe with increased tech in cars, perhaps the vehicle image is displayed on more screens so owners are seeing the ‘wrong’ image quite often? If so, then that might be a little irritating to some owners.
IMHO software that’s fit for purpose is more important than the colour of the car image displayed on screens and in apps matching the actual car’s paint colour. That’s just my opinion though.