We are making AonEne's first two changes and Yezrien's. Raziel's and duladen's are on purpose. I'm also reporting the ebook space issues.
Brandon almost always types "grey." When Warbreaker came out, Tor forgot to change all of them to "gray." So ever since then we've said that's Brandon's official style. Earlier books with "gray" are being changed.
Newspaper isn't a mistake—broadsheets are newspapers. "forward thinking" only needs a hyphen before a noun. And "had proved" is more common in than "had proven"; both are correct.