Leave it to Tim Burton to put a glorious Halloween Scene in a movie about candy.
After all, Charlie and the Chocolate Factory IS about candy. It's right there in the title.
We could debate the pros and cons of Gene Wilder's Willy Wonka over Johnny Depp's Wonka all day, but one thing the 2005 version has over the 1971 version is an origin story about Willy Wonka's overbearing father taking away his candy on Halloween.
The scene opens with a wide shot of a wet cobblestone street. Jack o' lanterns can be seen blazing away on the front steps of many brownstones. The colors are almost black & white, but there's an orange/brown tint to the shot, indicating fall.
Trick or treaters ascend stairs to knock on a door. It's here where we start to see Burton's attention to detail. Halloween oozes from every corner of the frame. Orange string lights outline the banister. The windows are peppered with black bats on white, orange jack o' lanterns on orange curtains, and spiders on purple. Not to mention a very-Beistle-like pumpkin on a door, dead leaves on the ground, and lit jack o' lanterns on the street.
After knocking, the camera takes on the POV of the woman answering the door, and we get a good look at their costumes: Wonka as the ghost, a pirate (with a very unique skull & crossbones design on his hat), an angel, and a straw-haired witch.