Yes! (also known as Red, Post-City, CN City 2006, CN City Reprise and CN City 2.0) was the fourth era of Cartoon Network. It began on April 3, 2006, running concurrent with CN City and ended on June 1, 2007 just before a 2-day Pokémon marathon started on June 2nd. It was re-branded to Summer 2007 on June 4, 2007 after the Pokémon marathon ended. The last program to air under the Yes! era on that day was Ed, Edd n Eddy.
Many of the bumpers in the Yes! era consisted of characters saying and doing random things behind a plain red background. There were also a handful of CN City bumpers in this era. It was the last branding of Cartoon Network to be introduced under Jim Samples' lead.