GoodView.swift

import SwiftUI

@Observable
final class GoodColor: Identifiable {
    var color: Color
    
    var id: Color {
        print(_color)
        return color
    }
    
    init(color: Color) {
        self.color = color
    }
}

struct GoodView: View {
    @State private var colors: [GoodColor] = [.init(color: .red), .init(color: .orange), .init(color: .yellow)]
    
    var body: some View {
        VStack { 
            ForEach(colors) { color in
                color.color
                    .onTapGesture {
                        color.color = .green
                    }
            }
        }
    }
}

WrongView.swift

import SwiftUI

struct WrongColor: Identifiable, Equatable {
    static func ==(lhs: WrongColor, rhs: WrongColor) -> Bool {
        return lhs.color == rhs.color
    }
    
    var color: Color
    
    var id: Color {
        print(color)
        return color
    }
}

struct WrongView: View {
    @State private var colors: [WrongColor] = [.init(color: .red), .init(color: .orange), .init(color: .yellow)]
    
    var body: some View {
        VStack { 
            ForEach(colors) { color in
                color.color
                    .onTapGesture {
                        var colors: [WrongColor] = colors
                        var greenColor: WrongColor = color
                        
                        greenColor.color = .green
                        
                        let index: Int = colors.firstIndex(of: color)!
                        colors.remove(at: index)
                        colors.insert(greenColor, at: index)
                        
                        self.colors = colors
                    }
            }
        }
    }
}