Cosmos OS code

using Cosmos.Core;
using Cosmos.Core.IOGroup;
using Cosmos.System;
using Cosmos.System.Graphics;
using Cosmos.System.Graphics.Fonts;
using System;
using System.Drawing;
using System.Reflection;
using Sys = Cosmos.System;

namespace CosmosOS
{
    public class Kernel : Sys.Kernel
    {
        Canvas canvas;
        Pen pen;
        int buttonx = 512;
        int buttony = 384;
        int bwidth = 100;
        int bheight = 50;

        public static Color[] Colors = new Color[]
        {
            Color.Blue, Color.Green, Color.Red, Color.DarkMagenta,
            Color.Purple, Color.Yellow, Color.Orange
        };

        protected override void BeforeRun()
        {
            System.Threading.Thread.Sleep(500);
            canvas = FullScreenCanvas.GetFullScreenCanvas();





            pen = new Pen(Color.White);
            canvas.Display();
        }

        public bool IsClicked()
        {
            return MouseManager.MouseState == MouseState.Left &&
                   MouseManager.X >= buttonx && MouseManager.X <= buttonx + bwidth &&
                   MouseManager.Y >= buttony && MouseManager.Y <= buttony + bheight;
        }

        protected override void Run()
        {
            int index = 0;

            while (true)
            {
                canvas.Clear(Colors[index]);
                canvas.DrawFilledRectangle(pen, new Sys.Graphics.Point(buttonx, buttony), bwidth, bheight);
                canvas.DrawPoint(pen, MouseManager.X, MouseManager.Y);
                canvas.DrawString("CosmosOS 2.0 booted up on i386.", PCScreenFont.Default, pen, 10, 10);

                canvas.Display();
                if (IsClicked())
                {
                    index++;
                    if (index == 6)
                    {
                        index = 0;
                    }
                    continue
                    ;
                }


                index = (index + 1) % Colors.Length;
                System.Threading.Thread.Sleep(500);


                System.Threading.Thread.Sleep(50);
            }
        }
    }
}