The Company Coordinator Center look and feel is controlled by the wrapper header for the primary event type of the event the company is associated with.  In order to edit the header of an event type:
  1. Navigate to the Event Management Settings tab when in the Teamraiser module
  2. Click Manage Headers
  3. Click Create Headers if making a new one or edit an existing header
  4. When done editing the header, go back to the Look and Feel tab and click Select Header for the event type of your company's event
  5. Select the header you just created/edited