Does anyone know the best way to contact Boy Scouts about doing blue and gold banquets or holiday parties?

Each state has a council headquarters which has the contact info for each troop.. go to the BSA webpage and start there... regional, state, county and community contacts should be listed there somewhere. The LDS Church is a predominant group involved in Scouting... you might check with your local ward or state to get the contact info for their Scout leadership.