newmtl mat18
  Kd 1.00 0.80 0.53

newmtl mat19
  Kd 0.87 0.60 0.27

newmtl mat23
  Kd 0.10 0.10 0.10

newmtl mat21
  Kd 1.00 1.00 1.00

newmtl mat7
  Kd 0.94 0.38 0.57

newmtl mat20
  Kd 0.47 0.33 0.28