Quite often in little snippets of descriptions in different scenes: 'rosey cheeked' or 'white faced' when scared or 'pale browed' when tired etc etc. Just because an author doesn't explicitly state something doesn't make it true, especially when he'd rather give the reader clues and subtle hints so they can picture the scene in their mind.Did he? Where? AFAIK Tolkien never described Frodo/Sam/Bilbo/Merry/Pippin as being white and there was a lot of controversy over Peter Jackson's casting in the Hobbit at the time and the casting director was fired for only auditioning white actors for the roles.