Bijna goed;

Exmple: 850 has the paint code 189-21. The first three digits (189 in this case) is for Volvo's colour code 189 Polar White
The fourth digit stands for:
1 = BASF (Glasurit)
2 = Herberts (STANDOX)
3 = Beckers
4 = IDAC/Dupont
5 = Sikkens
6, 7, and 9 = not used
8 = IVI
The fifth digit stands for:
1 = solvent based
2 = water based Metallic/Pearl + Varnish
3 = water based Solid + Varnish
4 = solvent based Solid + Varnish
5 = solvent based Pearl shine + Varnish*
6 = water based Solid/Metallic/Pearl + 2 component Varnish
7 = water based Solid/Metallic/Pearl + powder Varnish
8, 9 = not used