Related Clues:

• "The Blacklist" network
• Network for Jimmy Fallon
• Its logo displays all Roy G. Biv except indigo
• 'Siberia' network
• FDR was seen on it in '39
• A TV network
• 'Grimm' network
• Its old motto was "must-see TV"
• A major U.S. broadcaster
• Jimmy Fallon's home
• It has six of the seven rainbow colors in its logo
• One of the major networks
• 'America's Got Talent' airer
• ''America's Got Talent'' network
• "The Cosby Show" airer