Created custom Theme3D for Scatter3D component (QtDataVisualization module) with 3 Scatter3DSeries like this (Qt Quick 2 Scatter Example was used):

 Theme3D {
    id: themeDark
    type: Theme3D.ThemeIsabelle
    font.pointSize: 20
    baseColors: [
        ThemeColor { color: "red" }, 
        ThemeColor { color: "green" },
        ThemeColor { color: "blue" }
    ]
}

However got the problem:

1. st series is black
2. nd - is red
3. rd - is green

And what is baseColor property in Qt example here while Theme3D has baseColors property?!