Fig. 1.

The measurement results taken from the vehicle varnish samples including five common colors of vehicles – blue, dark blue, green, red, yellow. The vehicle varnish samples red and yellow are of solid color, whereas blue, dark blue, and green are of metallic color. The left axis shows the spectral reflectance $\mathbf{R}$ given in percentage to a well-defined Lambertian reflector in nadir incidence ($\mathbf{\theta }=0{}^{\circ }$) whereas the lower axis gives the incidence angle $\mathbf{\theta }$ set at the measurement device in degrees.