Floodfill (limited start area): 16, 39, 114, 50 -> 005eac9e|13, 76, 116, 234 -> 0dcbef88|9, 610, 63, 621 -> 001f0142|9, 647, 57, 658 -> 0010fe97|37, 687, 115, 698 -> 016ca61f