- $colorPreview.find('.color-preview-header').attr('style', 'background-color: ' + gradient_start + '; background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(' + gradient_start + '), to(' + gradient_end + ')); background-image: -moz-linear-gradient(-90deg, ' + gradient_start + ', ' + gradient_end + ');');
+ $colorPreview.find('.color-preview-header').attr('style', 'background-color: ' + gradientStart + '; background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(' + gradientStart + '), to(' + gradientEnd + ')); background-image: -moz-linear-gradient(-90deg, ' + gradientStart + ', ' + gradientEnd + ');');