Drink until your piss is clear- for those excreting other colours...
Abnormal colors
Since the normal color of urine is pale yellow, variations can be an indication of health problems or be the result of certain foods that have been eaten.
Clear urine
If a person has been drinking an excess of water or diuretics such as coffee or beer, the urine may have little or no color. Typically, it is nothing to worry about if it happens occasionally.
Yellow urine
Excess sweating could result in the urine becoming a deeper yellow. Also, it is a sign that you have not been drinking enough liquids
Dark yellow urine
Liver problems or jaundice can cause the urine to become consistently a dark yellow color. Be sure you have been drinking enough fluids before jumping to conclusions.
Orange urine
People who eat too many carrots--like from a juicer--may see orange urine. Also, too much Vitamin C can turn the urine orange.
Brown urine
Brown urine can an indication of a serious condition. It could be caused by liver disease, hepatitis, melanoma cancer, or copper poisoning. Other symptoms from those ailments should also be considered as indicators. But note that if you had recently eaten fava beans or taken a laxative, your urine also could turn brown.
Greenish urine
A urinary tract infection, bile problems and certain drugs can cause the urine to turn greenish. A brighter green color is an indication of an excess of B vitamins.
Blue urine
Urine with a bluish tint can be caused by a psuedomonas bacterial infection. It can also be an indication of high levels of calcium.
Reddish urine
There are a number of things that can cause the urine to have a red tint.