Using TImage32
About the documentation
Appearance
32-bit ARGB color assigned to the polygon renderer when drawing.
property FillColor: TColor32 read FFillColor write SetFillColor;
FillColor specifies the 32-bit ARGB color (TColor32) passed to TPolygonRenderer32.Color prior to rendering polygon paths.
FillColor
TColor32
TPolygonRenderer32.Color