77fdfe62 ​

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