newmtl mat23
  Kd 0.10 0.10 0.10

newmtl mat20
  Kd 0.47 0.33 0.28

newmtl mat19
  Kd 0.87 0.60 0.27

newmtl mat15
  Kd 0.81 0.85 0.86

newmtl mat21
  Kd 1.00 1.00 1.00

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 mat22
  Kd 0.62 0.62 0.62