Do the red and green keys in the Level 580 picture unlock a slot?

No. They are colored pixels inside the road-sign character artwork; only the active trays and their live counts control capacity.

What remains at the end of Level 580?

Two tiny yellow marks near the upper-left edge remain immediately before the empty frame and Level Complete state.

Food Hunt: Pixel Puzzle level guide

hard 11 colors

Drain yellow 41 and blue 54/36 active remainders from the road-sign opening, protect dark/white capacity, and remove the final yellow pixels.

If the player asks you to sign in, open the video on YouTube instead.

Read the fresh opening row as yellow 50, cyan 40, teal 40, and white 30; blue 60, teal 40, cyan 40, and blue 60 are visible deeper in the queue.
Wait through active yellow 41, blue 54, and blue 36 after the opening taps; those are live remainders, not fresh values to count again.
Admit cyan 40, teal 40, white 30, and the next blue 60 family only as a lane releases, keeping capacity for dark 22 and white/gray sign details.
Let the long blue/cyan/teal groups remove the background and sign layers, then feed the yellow character, green shirt, brown shoe, and red/green art areas through their displayed color groups.
Near the tail, let the black/white/yellow row resolve; one yellow tray reads 1 while a neighboring lane holds a tiny white remainder, so wait before adding another long blue group.
The last picture remnants are two tiny yellow marks near the upper-left edge. Wait for those marks to leave and confirm all five slots are empty.

Colors in this level:

Yellow, Blue, Cyan, Teal, White, Gray, Green, Orange, Black, Red, Purple

Treating active yellow 41 or blue 54/36 as fresh nests after those groups have already entered the tray.
Reading the red and green keys embedded in the character as tray locks or queue values.
Spending the final open lane on a long blue/cyan group while yellow 1 or the tiny white remainder is still active.

Separate yellow 50 and blue 60 fresh values from active yellow 41 and blue 54/36.
Ignore the red/green key icons inside the picture as queue data.
Keep a lane for the final yellow 1 and tiny white remainder.

Board notes 5 details

Layout: A yellow bent-arrow road sign stands at the left beside a yellow-and-teal character with a green shirt and brown shoe over a blue/cyan background; red and green key icons are fixed picture art.
Goal: Remove the background, sign, character, clothing, shoe, and embedded art pixels until the framed board is empty.
Opening: The fresh row shows yellow 50, cyan 40, teal 40, and white 30; deeper rows show blue 60, teal 40, cyan 40, and blue 60.
Danger Zone: Blue/cyan/teal 40/60/80 families can occupy all five lanes while dark 22, white 30, and final yellow/black pieces wait.
Mechanics: Five slots are open from the start; the embedded red/green key icons belong to the picture, and the final board leaves two tiny yellow marks near the upper-left.

Do the red and green keys in the Level 580 picture unlock a slot?
No. They are colored pixels inside the road-sign character artwork; only the active trays and their live counts control capacity.
What remains at the end of Level 580?
Two tiny yellow marks near the upper-left edge remain immediately before the empty frame and Level Complete state.