No...


You have to write them in a shader language such as HLSL, through the effect of a material...


ex:
Code:

---

material mat_this
{
    ambient_red = 128;
    ambient_green = 128;
    ambient_blue = 128;
    albedo = 100;
    power = 100;
    alpha = 100;
    effect = "
        ...
        ";
}

ACTION MyPlayer
{
    my.material = mat_this;
    ...
}

---

Sorry I didn't write a shader. I only know how they work, not the language...