9f236235 ​

input = fill #0 (fill #1 #2) |> fold rect #3
output = #4
(VInt, HInt, Color, UList ((VInt, HInt, VInt, HInt), Color), OList OList Color)
(19v, 19h, red, {((16v, 16h, 19v, 19h), black), ((16v, 11h, 19v, 14h), green), ((16v, 6h, 19v, 9h), green), ((16v, 1h, 19v, 4h), green), ((11v, 16h, 14v, 19h), black), ((11v, 1h, 14v, 4h), black), ((6v, 16h, 9v, 19h), black), ((6v, 1h, 9v, 4h), black), ((1v, 16h, 4v, 19h), black), ((1v, 11h, 4v, 14h), black), ((1v, 6h, 4v, 9h), black), ((1v, 1h, 4v, 4h), green), ((11v, 11h, 14v, 14h), green), ((11v, 6h, 14v, 9h), black), ((6v, 11h, 9v, 14h), black), ((6v, 6h, 9v, 9h), green)}, [[black, black, black, green], [black, black, green, black], [black, green, black, black], [black, green, green, green]])
(19v, 19h, teal, {((16v, 16h, 19v, 19h), green), ((16v, 11h, 19v, 14h), black), ((16v, 6h, 19v, 9h), black), ((16v, 1h, 19v, 4h), black), ((11v, 16h, 14v, 19h), black), ((11v, 1h, 14v, 4h), black), ((6v, 16h, 9v, 19h), black), ((6v, 1h, 9v, 4h), red), ((1v, 16h, 4v, 19h), black), ((1v, 11h, 4v, 14h), black), ((1v, 6h, 4v, 9h), red), ((1v, 1h, 4v, 4h), black), ((11v, 11h, 14v, 14h), blue), ((11v, 6h, 14v, 9h), black), ((6v, 11h, 9v, 14h), black), ((6v, 6h, 9v, 9h), blue)}, [[black, black, red, black], [black, black, blue, red], [black, blue, black, black], [green, black, black, black]])
(11v, 11h, red, {((9v, 9h, 11v, 11h), yellow), ((9v, 5h, 11v, 7h), black), ((9v, 1h, 11v, 3h), black), ((5v, 9h, 7v, 11h), black), ((5v, 1h, 7v, 3h), teal), ((1v, 9h, 3v, 11h), black), ((1v, 5h, 3v, 7h), teal), ((1v, 1h, 3v, 3h), black), ((5v, 5h, 7v, 7h), teal)}, [[black, teal, black], [black, teal, teal], [yellow, black, black]])
(23v, 23h, teal, {((19v, 19h, 23v, 23h), black), ((19v, 13h, 23v, 17h), black), ((19v, 7h, 23v, 11h), green), ((19v, 1h, 23v, 5h), black), ((13v, 19h, 17v, 23h), red), ((13v, 1h, 17v, 5h), red), ((7v, 19h, 11v, 23h), black), ((7v, 1h, 11v, 5h), black), ((1v, 19h, 5v, 23h), blue), ((1v, 13h, 5v, 17h), blue), ((1v, 7h, 5v, 11h), green), ((1v, 1h, 5v, 5h), blue), ((13v, 13h, 17v, 17h), black), ((13v, 7h, 17v, 11h), green), ((7v, 13h, 11v, 17h), black), ((7v, 7h, 11v, 11h), green)}, ?)