45737921 ​

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