695367ec ​

input = fill #0 (fill #1 #2)
output = fill 15v (fill 15h #2) |> fold rect #3
(VInt, HInt, Color, UList ((VInt, HInt, VInt, HInt), Color))
(3v, 3h, green, {((13v, 13h, 15v, 15h), black), ((13v, 9h, 15v, 11h), black), ((13v, 5h, 15v, 7h), black), ((13v, 1h, 15v, 3h), black), ((9v, 13h, 11v, 15h), black), ((9v, 1h, 11v, 3h), black), ((5v, 13h, 7v, 15h), black), ((5v, 1h, 7v, 3h), black), ((1v, 13h, 3v, 15h), black), ((1v, 9h, 3v, 11h), black), ((1v, 5h, 3v, 7h), black), ((1v, 1h, 3v, 3h), black), ((9v, 9h, 11v, 11h), black), ((9v, 5h, 11v, 7h), black), ((5v, 9h, 7v, 11h), black), ((5v, 5h, 7v, 7h), black)})
(2v, 2h, teal, {((13v, 1h, 14v, 2h), black), ((10v, 1h, 11v, 2h), black), ((7v, 1h, 8v, 2h), black), ((4v, 1h, 5v, 2h), black), ((1v, 13h, 2v, 14h), black), ((1v, 10h, 2v, 11h), black), ((1v, 7h, 2v, 8h), black), ((1v, 4h, 2v, 5h), black), ((1v, 1h, 2v, 2h), black), ((13v, 13h, 14v, 14h), black), ((13v, 10h, 14v, 11h), black), ((13v, 7h, 14v, 8h), black), ((13v, 4h, 14v, 5h), black), ((10v, 13h, 11v, 14h), black), ((10v, 10h, 11v, 11h), black), ((10v, 7h, 11v, 8h), black), ((10v, 4h, 11v, 5h), black), ((7v, 13h, 8v, 14h), black), ((7v, 10h, 8v, 11h), black), ((7v, 7h, 8v, 8h), black), ((7v, 4h, 8v, 5h), black), ((4v, 13h, 5v, 14h), black), ((4v, 10h, 5v, 11h), black), ((4v, 7h, 5v, 8h), black), ((4v, 4h, 5v, 5h), black)})
(4v, 4h, red, {((11v, 1h, 14v, 4h), black), ((6v, 1h, 9v, 4h), black), ((1v, 11h, 4v, 14h), black), ((1v, 6h, 4v, 9h), black), ((1v, 1h, 4v, 4h), black), ((11v, 11h, 14v, 14h), black), ((11v, 6h, 14v, 9h), black), ((6v, 11h, 9v, 14h), black), ((6v, 6h, 9v, 9h), black)})
(5v, 5h, yellow, ?)