Tennessee Tourism Officials Have Installed Viewfinders At Three Scenic Spots, Including An Overlook In The Great Smoky Mountains, To Help Colorblind People See The Fall Foliage Burst With Color For The First Time. The Viewfinders Don’t Use New Technology, Since Glasses For Colorblindness Already Exist. But State Officials Believe It’s The First Time It’s Been Incorporated Into A Viewfinder That Helps With Red-Green Color Deficiencies. One Of The Other Viewfinders Is Located At The Overlook Off Interstate 26 Near Erwin In Unicoi County.