/// <summary>
        /// Description : Color Model Button Management
        /// </summary>
        private void ColorButton()
        {
            // BUTTON COLOR MODEL
            EditorGUILayout.BeginHorizontal();

            if (GUILayout.Button("Add a COLOR LIBRARY"))
            {
                _manager.AddColorModel();
            }

            EditorGUILayout.EndHorizontal();

            EditorGUILayout.Space(10);
        }