264363fd ​

input = fill 30v (fill 30h #0) |> fold (fold rect) #1
output = fill 30v (fill 30h #0) |> fold (fold rect) #2
(Color, OList UList ((VInt, HInt, VInt, HInt), Color), OList UList ((VInt, HInt, VInt, HInt), Color))
(teal, [{((4v, 25h, 6v, 27h), green)}, {((3v, 26h, 7v, 26h), red)}, {((19v, 9h, 27v, 26h), blue), ((5v, 24h, 5v, 28h), red), ((2v, 3h, 16v, 19h), blue)}, {((26v, 18h, 26v, 18h), green), ((6v, 6h, 6v, 6h), green), ((5v, 26h, 5v, 26h), green)}], [{((2v, 3h, 16v, 19h), blue)}, {((25v, 17h, 27v, 19h), green), ((5v, 5h, 7v, 7h), green)}, {((19v, 18h, 27v, 18h), red), ((19v, 9h, 25v, 26h), blue), ((2v, 6h, 16v, 6h), red)}, {((26v, 9h, 26v, 26h), red), ((6v, 3h, 6v, 19h), red)}, {((27v, 20h, 27v, 26h), blue), ((27v, 9h, 27v, 16h), blue), ((26v, 18h, 26v, 18h), green), ((6v, 6h, 6v, 6h), green)}])
(blue, [{((4v, 25h, 8v, 25h), green)}, {((16v, 7h, 28v, 24h), red), ((6v, 23h, 6v, 27h), green), ((6v, 2h, 14v, 18h), red)}, {((25v, 17h, 25v, 17h), yellow), ((11v, 6h, 11v, 6h), yellow), ((8v, 15h, 8v, 15h), yellow), ((6v, 25h, 6v, 25h), yellow)}], [{((16v, 7h, 28v, 24h), red), ((9v, 7h, 14v, 18h), green)}, {((16v, 17h, 28v, 17h), green), ((6v, 2h, 10v, 14h), green)}, {((25v, 7h, 25v, 24h), green), ((9v, 2h, 14v, 5h), red), ((6v, 7h, 7v, 18h), red)}, {((12v, 16h, 14v, 18h), red), ((12v, 7h, 14v, 14h), red), ((12v, 6h, 14v, 6h), green), ((11v, 2h, 11v, 5h), green), ((9v, 16h, 10v, 18h), red), ((8v, 16h, 8v, 18h), green), ((6v, 15h, 7v, 15h), green), ((6v, 2h, 7v, 5h), red), ((25v, 17h, 25v, 17h), yellow), ((11v, 6h, 11v, 6h), yellow), ((9v, 7h, 10v, 14h), red), ((8v, 15h, 8v, 15h), yellow)}])
(teal, [{((25v, 25h, 29v, 25h), grey)}, {((26v, 24h, 28v, 26h), fuschia), ((17v, 13h, 23v, 22h), green), ((10v, 2h, 24v, 10h), green), ((3v, 12h, 15v, 27h), green)}, {((27v, 25h, 27v, 25h), yellow), ((21v, 19h, 21v, 19h), yellow), ((13v, 5h, 13v, 5h), yellow), ((11v, 16h, 11v, 16h), yellow), ((7v, 24h, 7v, 24h), yellow)}], [{((17v, 13h, 23v, 22h), green), ((10v, 2h, 24v, 10h), green), ((3v, 12h, 15v, 27h), green)}, {((20v, 18h, 22v, 20h), fuschia), ((12v, 4h, 14v, 6h), fuschia), ((10v, 15h, 12v, 17h), fuschia), ((6v, 23h, 8v, 25h), fuschia)}, {((22v, 19h, 23v, 19h), grey), ((17v, 19h, 20v, 19h), grey), ((14v, 5h, 24v, 5h), grey), ((12v, 16h, 15v, 16h), grey), ((10v, 5h, 12v, 5h), grey), ((8v, 24h, 15v, 24h), grey), ((3v, 24h, 6v, 24h), grey), ((3v, 16h, 10v, 16h), grey), ((21v, 19h, 21v, 19h), yellow), ((13v, 5h, 13v, 5h), yellow), ((11v, 16h, 11v, 16h), yellow), ((7v, 24h, 7v, 24h), yellow)}])
(yellow, [{((23v, 3h, 25v, 5h), green)}, {((24v, 2h, 24v, 6h), teal), ((15v, 13h, 28v, 29h), blue), ((3v, 4h, 12v, 15h), blue)}, {((25v, 19h, 25v, 19h), red), ((24v, 4h, 24v, 4h), red), ((18v, 24h, 18v, 24h), red), ((10v, 7h, 10v, 7h), red)}], ?)