Sure. This is the part that involves the material block:
var Overlay : overlay = overlay{}
Background : material_block = material_block{DefaultImage:=UI.Materials.M_AbilityCardMain{}, DefaultDesiredSize:=vector2{X:=600.0, Y:=775.0}}
var BackgroundMat : M_AbilityCardMain = M_AbilityCardMain{}
Init():void=
set BackgroundMat = M_AbilityCardMain{}
Background.SetImage(BackgroundMat)
set Overlay = overlay:
Slots:=array:
overlay_slot:
Widget:=Background
HorizontalAlignment:=horizontal_alignment.Center
VerticalAlignment:=vertical_alignment.Center