The old tab view of Gradient Game

GradientGameOldTabView.swift

import SwiftUI

struct MainView : View {
    @State private var currentTab: Int = 1

    var body: some View {
        TabView(selection: $currentTab) {
            RGBView()
                .tabItem {
                    Image(systemName: "circle.grid.hex")
                        .font(.system(size: 20))
                    Text("RGB")
                        .kerning(1)
            }
            .tag(1)
            HSBView()
                .tabItem {
                    Image(systemName: "circle.grid.2x2")
                        .font(.system(size: 20))
                    Text("HSB")
                        .kerning(1)
            }
            .tag(2)
            HistoryView()
                .navigationViewStyle(StackNavigationViewStyle())
                .tabItem {
                    Image(systemName: "doc.text")
                        .font(.system(size: 20))
                    Text("HISTORY")
                        .kerning(1)
            }
            .tag(3)
            SettingsView()
                .navigationViewStyle(StackNavigationViewStyle())
                .tabItem {
                    Image(systemName: "gear")
                        .font(.system(size: 20))
                    Text("SETTINGS")
                        .kerning(1)
            }
            .tag(4)
        }
        .accentColor(.mainColor)
    }

    init() {
        let appearance = UITabBar.appearance()
        appearance.barStyle = .black
    }
}