b7999b51 ​

input = fill #0 (fill #1 black) |> fold (fold rect) #2
output = #3
(VInt, HInt, OList UList ((VInt, HInt, VInt, HInt), Color), OList OList Color)
(19v, 18h, [{((7v, 5h, 11v, 11h), teal), ((3v, 3h, 5v, 7h), blue)}, {((9v, 7h, 12v, 14h), orange), ((4v, 4h, 4v, 15h), red)}], [[teal, orange, blue, red], [teal, orange, blue, black], [teal, orange, blue, black], [teal, orange, black, black], [teal, black, black, black]])
(10v, 15h, [{((2v, 3h, 4v, 9h), red)}, {((6v, 4h, 7v, 8h), blue), ((4v, 6h, 4v, 11h), green)}], [[red, blue, green], [red, blue, black], [red, black, black]])
(10v, 15h, [{((6v, 3h, 9v, 8h), yellow)}, {((7v, 2h, 7v, 5h), green), ((2v, 2h, 4v, 5h), teal)}], [[yellow, teal, green], [yellow, teal, black], [yellow, teal, black], [yellow, black, black]])
(12v, 18h, [{((3v, 2h, 5v, 7h), red)}, {((4v, 5h, 6v, 10h), green)}, {((7v, 2h, 12v, 7h), fuschia), ((8v, 8h, 8v, 10h), green), ((7v, 8h, 7v, 12h), teal), ((3v, 10h, 4v, 13h), blue)}], ?)