newmtl mat11
  Kd 0.00 0.59 0.53

newmtl mat17
  Kd 0.27 0.35 0.39

newmtl mat12
  Kd 1.00 0.92 0.23

newmtl mat21
  Kd 1.00 1.00 1.00

newmtl mat3
  Kd 0.50 0.87 0.92