See a doctor if this is the case. Very Dark Brown:

Drinking wine the night before may result in dark brown poop. This could also be the result of eating too much salt, or not enough vegetables.

Yellow:

One condition that can cause yellow poop is an infection known as giardia, a dangerous infection that can spread to others. Another cause of yellow poop may be a condition known as Gilbert’s syndrome. See your doctor if you are consistently seeing yellow poop. Green:

Babies often have green poop when they are given food for the first time. Children may have green or blue poop from certain illnesses or from ingesting food colorings. Adults may also have green poop if they eat large amounts of green, leafy vegetables or if they eat large amounts of foods with green food coloring.
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