The most likely diagnosis for this patient is post-hepatic jaundice.  This is probably due to a bile duct obstruction as the patient has gallstones.  With a bile duct obstruction, the bilirubin in the liver cannot get into the small intestines and, therefore, gets into the general circulation and is excreted in the urine.  This would account for the yellow color present in the patient's skin and eyes.  The patient's high cholesterol could explain the gallstones, as cholesterol stones can form when bile contains too much cholesterol.