Fig. 6

Overlapped distribution maps of the white, glossy and matte black paints for a section in area (1) showing that the gray paint was made by mixing the white paint and the black glossy paint and not the matte black
Overlapped distribution maps of the white, glossy and matte black paints for a section in area (1) showing that the gray paint was made by mixing the white paint and the black glossy paint and not the matte black