All Foods Stool Dark Brown Darker Stool?

Darker stool? - all foods stool dark brown

Today I had a strange color of the chair, you can see, it was light brown, but scattered along sections seemed darker than it might have been the food you ate. The chair is not black. I call oatmeal, salad, tilapia and dark green leaves Rapini, that I think can be the cause of my condition feces. Could it be? Do not spend too much tar, no blood in the bathroom, no blood on toilet paper. I think that eating what I?