Can be a liver
Thank you for asking at healthcaremagic.
I carefully read your question and understand your concern.
Change in color of urine is usually related with liver and metabolisation of bile.
like symptom could also be suggestive of some infection in liver.
Few tests should be done initially-
1)Urine routine and microscopy.
2)Serum direct indirect an total bilirubin
3)Liver function tests.
If possible ultrasound
abdomen should also be done.
Follow up with reports!