For a stay longer than 180 days, the flat-rate per diem is 55 percent. Rates are fixed, and partly based on the cost of living in a location. Johnson said the changes are meant to give long-term TDY travelers an incentive to seek out extended-stay lodgings, which generally are less expensive.
Bilirubin is a yellow pigment that causes jaundice and dark yellow colored urine when present in increased amounts. Some people normally have higher bilirubin in their blood. This is known as Gilbert's disease. So their urine will naturally have more bilirubin.
Bright yellow or light green urine may be a sign of excess B vitamins as well. Asparagus has also been known to give urine a green tint. Brown urine can be caused by eating a lot of fava beans or by consuming aloe. It can also be cause for serious concern, though, and indicate liver and kidney disorders.