It is probably more green because logically, what you put in is what will come out. People who are primarily vegetarians will have a looser, colorful stool because the fibrous veggies they eat provide the ability to "drop a deuce" more easily. (Natural Fiber) Its not that any feces is abnormal, it just depends on how well regulated the digestive system is and what you eat to make it come out.
No it should not if you have green feces you have a medical problem you should tell an adult you trust and they will give you more information and (if necessary) help.
No.
No, it is not normal to have feces in urine. Feces and urine are separate waste products that should not mix in the body. If you notice feces in your urine, it could indicate a medical issue and you should consult a healthcare provider for further evaluation.
If the feces do not come out regularly as normal, the term is "impacted".
Eat a proper balanced diet.
No
Yes, feces is what you have in the colon. You can use an enema.
the large intestine
Feces are stored in the rectum until they pass through the anus to the outside of the body. This passage is known as defecation.
Dark brown, the normal color.
Fertilizer
The red food coloring in (mostly cheap) red wine combined with the normal brown color of feces = green!