The surface colour a mesh is painted with (#449): its representation item's IfcStyledItem, else its styled presentation layer, else its material's IfcMaterialDefinitionRepresentation.
IfcStyledItem
IfcMaterialDefinitionRepresentation
Each channel in [0, 1].
[0, 1]
Which assignment supplied the colour, in that precedence.
The IfcStyledItem, the layer assignment or the IfcMaterial.
IfcMaterial
The IfcSurfaceStyle.
IfcSurfaceStyle
In [0, 1], 0 opaque; undefined when the file states none (opaque).
undefined
The surface colour a mesh is painted with (#449): its representation item's
IfcStyledItem, else its styled presentation layer, else its material'sIfcMaterialDefinitionRepresentation.