function _onClickBtnPresetColor(evt){
            var targetButton = $(evt.target);
            var targetColor = _getRefinedHexColor(targetButton.css('background-color'));

            elements.inputColor.val(targetColor);
            elements.inputColor.focus();
            elements.colorsWrap.find(".btn-preset-color").removeClass("active");
            targetButton.addClass("active");

            _updateInputBySelectedColor(elements.inputName, elements.inputColor, targetColor);
        }
"click" event handler of preset color button

@param evt
@private