如何在 LazyVGrid 中设置列​​的背景颜色？

Question

我正在使用 LazyVGrid 显示日历月，并希望 Sat 和 Sun 列具有不同的背景颜色。

            LazyVGrid(columns: columns, spacing: 34) {
                ForEach(daysForMonthView, id: \.self) { day in
                    Text(dayFormatter.string(from: day.start))
                        .fontWeight(.semibold)
                        .foregroundColor(
                            currentDisplayMonth.contains(day) ? .primary : .secondary
                        )
                        .background (
                            ZStack {
                                if let selectedDay = selectedDay, selectedDay == day {
                                    RoundedRectangle(cornerRadius: 4)
                                        .fill(Color(white: 0.3))
                                        .frame(width: 30, height: 30)
                                }
                                if day.contains(Date()) {
                                    RoundedRectangle(cornerRadius: 4)
                                        .stroke(Color.secondary, lineWidth: 1)
                                        .frame(width: 30, height: 30)
                                }
                                
                                practiceSymbolRow(forDay: day)
                                    .offset(y: 20)
                            }
                        )
                        .onTapGesture {
                            selectedDay = day
                        }
                }
            }