I bought some Pedialyte freezer pops for my kids: And I've noticed that after spending a long enough time in the freezer, the purple "grape" pops change color from purple to green: After thawing (but before melting), the color changes back from green to purple. The dramatic color change happens...

I know that aliphatic alcohols react with reagents like $\ce{PBr3},$ $\ce{PBr5},$ $\ce{SOCl2}$ etc. to give alkyl halides as a product. But what will happen if we put aromatic alcohols like phenols with these types of reagents? Will haloarenes formation take place?