[example1-html] [example2-html] [run-example1] [run-example2] (note the difference between the central sphere in both examples)it specifies surface material properties for associated geometry nodes.
{
exposedField SFFloat ambientIntensity 0.2
exposedField SFColor diffuseColor 0.8 0.8 0.8
exposedField SFColor emissiveColor 0 0 0
exposedField SFFloat shininess 0.2
exposedField SFColor specularColor 0 0 0
exposedField SFFloat transparency 0 # 0 is opaque
}