WXYZ: Design Director.
- President Clinton’s Visit to WXYZ – February 9, 1993
Segments from The New York Times  article:
But before the policy debate begins, there are important, though small, details to consider, like the color of the set here. The White House wants “Presidential blue,” and lacking guidance on exactly what hue that is, the station has come up with a sky blue, faux marble backdrop. And the stool.
“What I picked out wasn’t extravagant,” protested Diane Fiolek-Mandel, the design director for WXYZ, as she stood today amid workers building the set for Wednesday night. “But they insisted that we don’t use it. What they wanted was a very, very plain stool. Go figure. I think they’re so wrapped up in the Presidential image.” White House Says, No Fuss
Jeff Eller, the White House director of media affairs, insisted that there was no fuss about the upholstered stool. “I don’t want to get into a stool argument,” he said. “This is not a huge sticking point for the future of the town hall.” 
The article continues:
Ms. Fiolek-Mandel said the attitudes of the Clinton people had changed. “They’re a lot more picky now,” she said. “Their attitude is different. This time, everyone says, ‘He’s the President now.’ Before, they were a lot looser.” 
Chuck Stokes, the editorial and public affairs director for WXYZ, said he picked the 60 people who will sit in the studio here with Mr. Clinton out of as many as 1,000 people who suggested questions in calls or faxes. 
- The New York Times, February 10, 1993, Richard L. Berke – Revival Meeting Tonight For Clinton the Populist (PDF)