newmtl mat22
  Kd 0.62 0.62 0.62

newmtl mat20
  Kd 0.47 0.33 0.28

newmtl mat24
  Ka 0.58 0.65 1.00
  Kd 0.92 0.95 0.94
  Ks 1 1 1
  illum 9
  Ns 300
  d 0.4
  Ni 1.5

newmtl mat15
  Kd 0.81 0.85 0.86

newmtl mat18
  Kd 1.00 0.80 0.53

newmtl mat12
  Kd 1.00 0.92 0.23

newmtl mat21
  Kd 1.00 1.00 1.00

newmtl mat23
  Kd 0.10 0.10 0.10