I meant "you can have it changed," Not "you can change it." I thought you meant you can't have it changed at all. This post is pretty much the perfect answer to this question. Achronos can change it, but he probably won't unless you have a legitimate reason.
Posted by: LordOfBlah51
Posted by: ctjl96
Lolconfirmed. Yes, you can, it's happened before, but you probably won't get it.
Posted by: Delta 15t
Confirmed.
~Delta
Posted by: spawn031
On Bungie.net, no. On Xbox Live, yes.
You can't, Achronos can. Which basically means it won't happen.