             context.lineTo(x * 71 + 35, y * 71 + 58)
             context.lineTo(x * 71 + 43, y * 71 + 53)
             context.lineWidth = 2
-            context.strokeStyle = 'grey'
             context.stroke()
       @floors[z] = floor
       container.append(floor)

            context.moveTo(71 * x + 15, 71 * y + 35)
            context.lineTo(71 * x + 55, 71 * y + 35)
            context.stroke()
            context.strokeStyle = 'black'
          if @maze.passage_exists([[x, y, z], [x, y, z + 1]])
            # paint up arrow
            context.beginPath()

            context.lineTo(x * 71 + 35, y * 71 + 13)
            context.lineTo(x * 71 + 43, y * 71 + 18)
            context.lineWidth = 2
            context.stroke()
          if @maze.passage_exists([[x, y, z - 1], [x, y, z]])
            # paint down arrow
