Mora Metallic is a color known from the original 8 Series and was only available through Individual. It's really rare to see on the F80 M3, we currently only know about 2 vehicles.

This particular car is part of the 1/20 special commission by Belgian dealers where each dealer configured their own unique spec to mark the end of the production.

These pictures don't do justice to the color as it has to be seen in sunny conditions to fully appreciate the purple metallic.