private void InitializeImages()
{
var pixels = new PixelBuffer(Display.DefaultSurfaceFormat, new Size(boxSize, boxSize));
pixels.FillRectangle(Color.FromArgb(220, Color.LightBlue), new Rectangle(Point.Zero, pixels.Size));
pixels.FillRectangle(Color.FromArgb(220, Color.White), new Rectangle(1, 1, pixels.Width - 2, pixels.Height - 2));
boxImage = new Surface(pixels);
}