package main
import (
    "fmt"
    "github.com/360EntSecGroup-Skylar/excelize"
func main() {
    f, _ := excelize.OpenFile("Book1.xlsx")
    fmt.Println(getCellBgColor(f, "Sheet1", "C1"))
}
func getCellBgColor(f *excelize.File, sheet, axix string) string {
    fgColor := f.Styles.Fills.Fill[fillID].PatternFill.FgColor
    if fgColor.Theme != nil {
        srgbClr := f.Theme.ThemeElements.ClrScheme.Children[*fgColor.Theme].SrgbClr.Val
        return excelize.ThemeColor(srgbClr, fgColor.Tint)
    }
    return fgColor.RGB