Answer:
I am black when you buy me, red when you use me. When I turn white, you know it's time to throw me away. What am I?
I jump when I walk and sit when I stand.
I can be any color you can imagine. You see me in everyday life. Look around, you can probably see some of me right now. What am I?
I am pinched by grandmas
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.