Poos do depend on food but they don't need to be golden to be good. A rabbit that eats more fresh food and grass will have darker poos, but they're still just as good as golden poos. If the hay is greener then the poos are darker too and buns seem to prefer greener hay. Well Smoo does anyway. Grimlock, who eats no hay and only soggy pellets has lovely golden poos, but Smoo who eats hay and lots of fresh plantain has much darker poos. So don't worry if your bun's poos aren't as lovely and golden as Molly and Brian's. Who have lovely poos by the way.