That's the color trend in most modern movies. I'm more worried about Snape. Why they just can't make it like in books, why it's so hard not to change things?!
Clear signs that the series will remain much closer to the books have given many fans hope for a strong adaptation. But side-by-side comparisons with Harry Potter and the Philosopher's Stone suggest that the noticeably colder visual tone of the first trailer has not gone down well. Many fans now fear the series could lose some of Harry Potter's magical charm.