Western Pacific could be seen frequently around DEN in the mid-late 90s. I always seemed to see the same jet: the one with FOX and the Simpsons on the side: (From Wikipedia)
Color in the sky
The WestPac livery could be encountered on several aircraft in variations on the basic Western Pacific livery; however, most of the aircraft were painted in colorful logojet schemes. They included advertisements for:- Stardust Resort & Casino - Las Vegas, NV
- Purgatory Ski Resort - Durango, Colorado
- Womack's Casino - Cripple Creek, Colorado
- Crested Butte Resort - Gunnison, Colorado
- The Broadmoor - Colorado Springs, Colorado
- Thrifty Car Rental - U.S. car rental chain
- ProRodeo Hall of Fame and Museum of the American Cowboy - Colorado Springs, Colorado
- The Simpsons - FOX-TV Network's hit television show
- Spirit of Durango - City of Durango, Colorado Board of Tourism
- Security Service Federal Credit Union - Colorado Credit Union
- Colorado Tech University - Denver, Colorado & Colorado Springs, Colorado
- Colorado Springs - City of Colorado Springs, Colorado Board of Tourism
So yes, it's been done, and
they went out of business when Jet-A was still less than a buck a gallon.
United's former Maintenance base in OAK is now a billboard that you can park six 747-400s inside. Sad--the Port of Oakland really has sold billboard space on the doors.