How to set up color transparency for the addShape

[xuxxxxxx0249]

Hey community

I am wondering does excelize 2.8.1 support set up color transparency for the addShape function?

Context:
I want to set up color transparency for the addShape which will help better display for shape line.
I attached the screenshot for the expected behavior, not sure we can setup solid color fill for one of ellipse I add it.
Ideally, if add color transparency then we can better visualize the overlap line.

Here is snap of code to generate two ellipses.
Below code will generate two ellipses with two solid color, but no color transparency.

	if err := f.AddShape(sheetName, &excelize.Shape{
		Type:   "ellipse",
		Cell:   "C3",
		Width:  uint(diaComp),
		Height: uint(diaComp),
		Line: excelize.ShapeLine{
			Color: "000000",
		},
		Fill: excelize.Fill{
			Type: "pattern", Pattern: 1,
			Color: []string{"#005996"},
		},
	}); err != nil {
		return fmt.Errorf("some thing wrong in the first ellipse %w", err)
	}

	if err := f.AddShape(sheetName, &excelize.Shape{
		Type:   "ellipse",
		Cell:   "F3",
		Width:  uint(diaFox),
		Height: uint(diaFox),
		Line: excelize.ShapeLine{
			Color: "000000",
		},
		Fill: excelize.Fill{
			Type: "pattern", Pattern: 1,
			Color: []string{"#66DBD1"},
		},
	}); err != nil {
		return fmt.Errorf("some thing wrong in the second ellipse %w", err)
	}

[xuri]

Duplicated with issue #2176. I added support this, this feature will be released on the next version.