         shadowLayer.shadowColor = color.cgColor
     }
     
-    func changeThumbColor(_ color: UIColor) {
+    open func changeThumbColor(_ color: UIColor) {
         if !isConfigurated {
             return
         }

        changeThumbFrameForPoint(label.center, animated: animated)
    }
    
    func changeTitle(_ title: String, atIndex: Int) {
        if !isConfigurated {
            return
        }

        
    }
    
    open func titleForItemAtIndex(_ index: Int) -> String {
        if !isConfigurated {
            return ""
        }
