def color_fill_to_border(x, y, fill)
      color_flood_fill(border_color, fill, x, y, Magick::FillToBorderMethod)
    end
def color_fill_to_border(x, y, fill)
      color_flood_fill(border_color, fill, x, y, Magick::FillToBorderMethod)
    end
Set all pixels that are neighbors of x,y and are not the border color
 to the fill color