Is my bird's poop normal?

Sorry for the gross topic but my budgie's droppings have been a different color lately — more lutinoish than usual. Diet hasn't changed. They're acting normal otherwise. Should I be worried or is this a normal variation?

Just wanted to come back and say the advice in this thread WORKED. My blue and gold macaw finally stopped night frights every few days after I tried getting natural java wood perches from a specialty bird store.

I actually disagree with this. In my experience with my canary, the opposite was true. But I know every bird is different.