User defined series colors in colStacked chart

[jerrychen113]

Description
Hello. We have series line color property work fine. But when I try combo with chart type "colStacked" with multi series, these colors seems too messy.

Steps to reproduce the issue:

var chartSeriesC []excelize.ChartSeries = []excelize.ChartSeries{
	{
		Name:        "Sheet1!$B$38",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$38:$Z$38",
		Line: excelize.ChartLine{
			Color: "FFFF00",
		},
	},
	{
		Name:       "Sheet1!$B$39",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$39:$Z$39",
	},
	{
		Name:       "Sheet1!$B$40",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$40:$Z$40",
	},
	{
		Name:       "Sheet1!$B$41",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$41:$Z$41",
	},
	{
		Name:       "Sheet1!$B$42",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$42:$Z$42",
	},
	{
		Name:       "Sheet1!$B$43",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$43:$Z$43",
	},
	{
		Name:       "Sheet1!$B$44",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$44:$Z$44",
	},
}
var chartSeriesL []excelize.ChartSeries = []excelize.ChartSeries{
	{
		Name:       "Sheet1!$B$45",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$45:$Z$45",
		Line: excelize.ChartLine{
			Color: "FF0000",
		},
		Marker: excelize.ChartMarker{
			Symbol: "none",
		},
	},
	{
		Name:       "Sheet1!$B$46",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$46:$Z$46",
		Marker: excelize.ChartMarker{
			Symbol: "none",
		},
	},
	{
		Name:       "Sheet1!$B$47",
		Categories: "Sheet1!$C$37:$Z$37",
		Values:     "Sheet1!$C$47:$Z$47",
		Marker: excelize.ChartMarker{
			Symbol: "none",
		},
	},
}

excel.AddChart("Sheet1", "K2", &excelize.Chart{
	Type:   "colStacked",
	Series: chartSeriesC,
}, &excelize.Chart{
	Type:   "line",
	Series: chartSeriesL,
})

Describe the results you received:

The colStacked in the chart has the default color.

Describe the results you expected:

Defined color by user.

Similar issue:

#1345

Excelize version or commit ID:

(2.7.0)

[xuri]

Thanks for your issue. I have add support for set the format for the data series fill. Now you can set the custom solid fill format like this:

var chartSeriesC []excelize.ChartSeries = []excelize.ChartSeries{
    {
        Name:        "Sheet1!$B$38",
        Categories: "Sheet1!$C$37:$Z$37",
        Values:     "Sheet1!$C$38:$Z$38",
+       Fill: excelize.Fill{Type: "pattern", Color: []string{"FFFF00"}, Pattern: 1},
-       Line: excelize.ChartLine{
-           Color: "FFFF00",
-       },
    },

Note that, the Color field in the ChartLine structure has been removed. This feature will be released in the next version.