WPF

public partial class Window1 : Window
{
    public Window1()
    {
        InitializeComponent();

        List<MatrixElements> elements = new List<MatrixElements>();
        for (int i = 0; i < 64; i++)
        {
            for (int j = 0; j < 64; j++)
            {
                elements.Add(new MatrixElements(i, j,
                    string.Format("Element: {0}/{1}", i.ToString(), j.ToString()),
                    string.Format("ToolTip: {0}/{1}", i.ToString(), j.ToString()),
                    Colors.Green));

            }
        }

        //TODO: Add to ListView or Grid where PositionX/PositionY marks the Position of the cell
    }
}

public class MatrixElements
{
    public int PositionX { get; set; }
    public int PositionY { get; set; }

    public string Text { get; set; }
    public string ToolTip { get; set; }

    public Color BackgroundColor { get; set; }

    public MatrixElements()
    {
    }

    public MatrixElements(int PositionX, int PositionY, string Text, string ToolTip, Color BackgroundColor)
    {
        this.PositionX = PositionX;
        this.PositionY = PositionY;
        this.Text = Text;
        this.ToolTip = ToolTip;
        this.BackgroundColor = BackgroundColor;
    }
}