90c28cc7 ​

input = fill 21v (fill 21h black) |> fold rect #0
output = #1
(UList ((VInt, HInt, VInt, HInt), Color), OList OList Color)
({((12v, 10h, 16v, 21h), grey), ((8v, 16h, 11v, 21h), blue), ((2v, 10h, 7v, 21h), orange), ((12v, 2h, 16v, 9h), red), ((8v, 10h, 11v, 15h), yellow), ((8v, 2h, 11v, 9h), green), ((2v, 2h, 7v, 9h), teal)}, [[teal, orange, orange], [green, yellow, blue], [red, grey, grey]])
({((10v, 9h, 16v, 16h), yellow), ((10v, 2h, 16v, 8h), blue), ((2v, 9h, 9v, 16h), teal), ((2v, 2h, 9v, 8h), red)}, [[red, teal], [blue, yellow]])
({((14v, 9h, 19v, 14h), blue), ((14v, 3h, 19v, 8h), yellow), ((8v, 3h, 13v, 14h), green), ((3v, 9h, 7v, 14h), red), ((3v, 3h, 7v, 8h), teal)}, [[teal, red], [green, green], [yellow, blue]])
({((16v, 15h, 19v, 19h), red), ((16v, 7h, 19v, 14h), yellow), ((16v, 2h, 19v, 6h), red), ((8v, 15h, 15v, 19h), teal), ((8v, 2h, 15v, 6h), teal), ((2v, 15h, 7v, 19h), blue), ((2v, 7h, 7v, 14h), yellow), ((2v, 2h, 7v, 6h), red), ((8v, 7h, 15v, 14h), green)}, ?)