newmtl mat20
  Kd 0.47 0.33 0.28

newmtl mat10
  Kd 0.30 0.69 0.31

newmtl mat18
  Kd 1.00 0.80 0.53

newmtl mat22
  Kd 0.62 0.62 0.62

newmtl mat5
  Kd 0.01 0.61 0.90

newmtl mat12
  Kd 1.00 0.92 0.23

newmtl mat23
  Kd 0.10 0.10 0.10