Sunset Productions

Background
Sunset Productions was a subsidiary of Warner Bros. that licensed the TV distribution rights to their black & white animated short subjects to Guild Films in 1955. Seven Arts acquired these rights from Guild after the latter went bankrupt in 1961, and WB gained these rights after merging with Seven Arts in 1967.

(1950s)
Logo: Variant: A redrawn colorized version of the logo exists.
 * Opening: On a "sky" background (a dark red background instead for the redrawn colorized variant), we see these characters: Porky Pig, Daffy Duck, Bozo, a rabbit from Hop and Go, the drunk dog heckler from Shake Your Powder Puff, and an alley cat from Sittin' on a Backyard Fence. On the bottom, it reads "Copyright (year) by SUNSET PRODUCTIONS, Inc.
 * Closing: The same image, but the words "THE END - A Guild Films Presentation" appear instead of copyright information.

FX/SFX: None, it's a still logo.

Music/Sound: Depending on the cartoon, the music varies (mostly it's the first half of "The Merry-Go-Round Broke Down").

Availability: Ultra rare. Since these titles were done to cover up the Warner Bros. references (including the zooming WB shield), they are not necessary to be used today. You can still find these titles on public domain prints of various black and white Looney Tunes cartoons.