code: function findGradient(cssProp) {
  		var value = cssProp.value();
  		var gradient = null;
  		var matchedPart = _.find(cssProp.valueParts(), function(part) {
  			return gradient = module.parse(part.substring(value));
  		});
  		
  		if (matchedPart && gradient) {
  			return {
  				gradient: gradient,
  				valueRange: matchedPart
  			};
  		}
  		
  		return null;
  	}
docs: Search for gradient definition inside CSS property value