newmtl mat12
  Kd 1.00 0.92 0.23

newmtl mat19
  Kd 0.87 0.60 0.27

newmtl mat23
  Kd 0.10 0.10 0.10

newmtl mat20
  Kd 0.47 0.33 0.28

newmtl mat25
  Ka 1.00 0.65 0.67
  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 mat22
  Kd 0.62 0.62 0.62