newmtl Material_1 Kd 0.141176 0.184314 0.258824 d 1 newmtl Material_2 Kd 0 0 0 d 1 newmtl Material_3 Kd 1 1 1 d 1 newmtl Material_4 Kd 0.2 0.137255 0.117647 d 1