Thanks for your help ! About the .pz2 file, I have troubles making it work: when I apply the pose, it correctly assign the material to the figure but not to the props. Here is my template:

{
version
{
number 4.01
}
figure
{
material body
    {
    KdColor 0.980392 0.980392 0.980392 1
    KaColor 0 0 0 0
    KsColor 0.843137 0.843137 0.843137 0.1
    ..............
    }

   
prop right_eye
    {
material right_eye
    {
    KdColor 1 0 0 1
    KaColor 1 0 0 0
    KsColor 0.984314 0.084314 0.084314 0
   .................
     }

}
}

I really can't see what might be wrong ...

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