"Urine color generally ranges from a pale-yellow color to deep amber. This coloring is primarily caused by the pigment urochrome, also known as urobilin. ... The pigments and chemical compounds in the foods you eat and the medications you take also alter the color of your urine."
You did not show us the image of the burger, but i shall try to answer as best i can. when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.