Color Rings

The colored concentric circles used in the introduction of Looney Tunes and Merrie Melodies cartoons changed every release season.
== 1935 to late 1936: Blue-Purple Rings, Black Background, Red Shield ==
Used from early to late 1936. "I Think You're Ducky" plays and each rendition is slightly different in each cartoon played. This scheme debuted in "Broken Toys" while the zooming WB shield and "Vitaphone" and "Presents" debuted in "Mickey's Grand Opera". The last cartoon to use these rings in the opening titles is "Three Blind Mouseketeers", but the ending rings would remain to be used until "The Country Cousin".
== Late 1936-1937: Blue Rings, Black Background, Blue Shield ==
Used from late 1936-1937. "I Think You're Ducky" is replaced with "Merrily We Roll Along", which would be the theme of the series until 1964. The shield's color is now blue instead of red. "Mickey's Elephant" uses a special opening title, including a new Merrie Melodies font, but this was quickly reverted back. The first five cartoons in this season ("Mickey's Elephant" to "Don Donald") play this song at a very fast pace, each with a slightly different variant.
However, starting with February 1937's "Magician Mickey", the tempo slowed down and the variant was the same. In September 1937's "Hawaiian Holiday", a twanging noise played when the shield zoomed in on screen. In addition, beginning to used a "finalized" version of both the opening and ending themes for the time. The last cartoon to use these rings is "Clock Cleaners".