7039b2d7 ​

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