You've got the right colour code (LZ5H), but there are 2 variants, 5368 and 5369, with the latter being listed as D (possibly for dark).
There is another possibility - contamination in the system - it's happened to me at an Audi bodyshop (now shut down), when a little blue was still in there, resulting in a blue-bottle like appearance - quite nice but not matching the rest of the car!
Cheers,
Mike