newmtl mat20
  Kd 0.47 0.33 0.28

newmtl mat10
  Kd 0.30 0.69 0.31

newmtl mat19
  Kd 0.87 0.60 0.27

newmtl mat18
  Kd 1.00 0.80 0.53

newmtl mat12
  Kd 1.00 0.92 0.23

newmtl mat9
  Kd 0.55 0.76 0.29