public abstract class StyleGroup : IReadOnlyCollection<Style>
    {
        private readonly HashSet<Style> _styles = new HashSet<Style>();

        public int Count => _styles.Count;

        public void Add(Style style)
        {
            _styles.Add(style);
        }

        public void AddRange(IEnumerable<Style> styles)
        {
            foreach (Style style in styles) {
                _styles.Add(style);
            }
        }

        public void AddRange(params Style[] styles)
        {
            foreach (Style style in styles) {
                _styles.Add(style);
            }
        }

        public IEnumerator<Style> GetEnumerator()
        {
            return _styles.GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return _styles.GetEnumerator();
        }
    }

    public class ProcessStyleGroup : StyleGroup
    {
        public ProcessStyleGroup()
        {
            CreateTextBlockStyles();
            CreateBorderStyles();
            CreateButtonStyles();
        }

        private void CreateTextBlockStyles()
        {
            Style insertStyle = new Style();
            insertStyle.Selector = insertStyle.Selector.OfType<TextBlock>().Class("Insert");
            insertStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, ColorPalette.Green.GetLightThemeBrush()));

            Style deleteStyle = new Style();
            deleteStyle.Selector = deleteStyle.Selector.OfType<TextBlock>().Class("Delete");
            deleteStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, ColorPalette.Red.GetLightThemeBrush()));

            Style updateStyle = new Style();
            updateStyle.Selector = updateStyle.Selector.OfType<TextBlock>().Class("Update");
            updateStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, ColorPalette.Blue.GetLightThemeBrush()));

            Style selectStyle = new Style();
            selectStyle.Selector = selectStyle.Selector.OfType<TextBlock>().Class("Select");
            selectStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, ColorPalette.Yellow.GetLightThemeBrush()));

            Style registerStyle = new Style();
            registerStyle.Selector = registerStyle.Selector.OfType<TextBlock>().Class("Register");
            registerStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, ColorPalette.Turquoise.GetLightThemeBrush()));

            Style unregisterStyle = new Style();
            unregisterStyle.Selector = unregisterStyle.Selector.OfType<TextBlock>().Class("Unregister");
            unregisterStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, ColorPalette.Purple.GetLightThemeBrush()));

            AddRange(insertStyle, deleteStyle, updateStyle, selectStyle, registerStyle, unregisterStyle);
        }

        private void CreateBorderStyles()
        {
            Style rootStyle = new Style(x => x.OfType<Border>().Class("Process"));
            rootStyle.Setters.Add(new Setter(Border.BorderBrushProperty, Brushes.White));
            rootStyle.Setters.Add(new Setter(Border.BorderThicknessProperty, new Thickness(1)));
            rootStyle.Setters.Add(new Setter(Decorator.PaddingProperty, new Thickness(8, 4)));

            Style insertStyle = new Style(x => x.OfType<Border>().Class("Insert"));
            insertStyle.Setters.Add(new Setter(Border.BackgroundProperty, ColorPalette.Green.GetLightThemeBrush()));

            Style deleteStyle = new Style(x => x.OfType<Border>().Class("Delete"));
            deleteStyle.Setters.Add(new Setter(Border.BackgroundProperty, ColorPalette.Red.GetLightThemeBrush()));

            Style updateStyle = new Style(x => x.OfType<Border>().Class("Update"));
            updateStyle.Setters.Add(new Setter(Border.BackgroundProperty, ColorPalette.Blue.GetLightThemeBrush()));

            Style selectStyle = new Style(x => x.OfType<Border>().Class("Select"));
            selectStyle.Setters.Add(new Setter(Border.BackgroundProperty, ColorPalette.Yellow.GetLightThemeBrush()));

            Style registerStyle = new Style(x => x.OfType<Border>().Class("Register"));
            registerStyle.Setters.Add(new Setter(Border.BackgroundProperty, ColorPalette.Turquoise.GetLightThemeBrush()));

            Style unregisterStyle = new Style(x => x.OfType<Border>().Class("Unregister"));
            unregisterStyle.Setters.Add(new Setter(Border.BackgroundProperty, ColorPalette.Purple.GetLightThemeBrush()));

            AddRange(rootStyle, insertStyle, deleteStyle, updateStyle, selectStyle, registerStyle, unregisterStyle);
        }

        private void CreateButtonStyles()
        {
            Style rootStyle = new Style(x => x.OfType<Button>().Class("Process"));
            rootStyle.Setters.Add(new Setter(Decorator.PaddingProperty, new Thickness(8, 4)));

            Style rootTextBlockStyle = new Style(x => x.OfType<Button>().Class("Process").Template().OfType<TextBlock>());
            rootTextBlockStyle.Setters.Add(new Setter(TextBlock.ForegroundProperty, Brushes.White));
            rootTextBlockStyle.Setters.Add(new Setter(TextBlock.FontWeightProperty, FontWeight.DemiBold));

            Style insertStyle = new Style(x => x.OfType<Button>().Class("Insert"));
            insertStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.Green.GetLightThemeBrush()));

            Style deleteStyle = new Style();
            deleteStyle.Selector = deleteStyle.Selector.OfType<Button>().Class("Delete");
            deleteStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.Red.GetLightThemeBrush()));

            Style updateStyle = new Style();
            updateStyle.Selector = updateStyle.Selector.OfType<Button>().Class("Update");
            updateStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.Blue.GetLightThemeBrush()));

            Style selectStyle = new Style();
            selectStyle.Selector = selectStyle.Selector.OfType<Button>().Class("Select");
            selectStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.Yellow.GetLightThemeBrush()));

            Style registerStyle = new Style();
            registerStyle.Selector = registerStyle.Selector.OfType<Button>().Class("Register");
            registerStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.Turquoise.GetLightThemeBrush()));

            Style unregisterStyle = new Style();
            unregisterStyle.Selector = unregisterStyle.Selector.OfType<Button>().Class("Unregister");
            unregisterStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.Purple.GetLightThemeBrush()));

            Style generateStyle = new Style(x => x.OfType<Button>().Class("Generate"));
            generateStyle.Setters.Add(new Setter(Button.BackgroundProperty, ColorPalette.BlueGreen.GetLightThemeBrush()));

            AddRange(rootStyle, insertStyle, deleteStyle, updateStyle, selectStyle, registerStyle, unregisterStyle);
        }
    }