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

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

            _updateInputBySelectedColor(elements.editLabelName,
                                        elements.editLabelColor,
                                        targetColor);
        }
"click" event handler of preset color buttons on editLabel form.

@param evt
@private