This is how the Butler County Government Center will look once its exterior beige panels, which are deteriorating, are replaced. The county commissioners last week authorized seeking bids to do the work, which is estimated to cost between $2.9 million and $4.5 million. County officials expressed safety concerns about the panels, which have rusting rebar inside. One of the panels had to be reattached after becoming unsecured. The county is finalizing a schedule that includes a bid award date.