Well, it may be different in JUST the armour wil files but those 8bits of data you don't know about may be colouring information.
When creating a new armour wil (by adding a new armour to replace an old one) ALL armours will no longer allow you to change their colour, old or new.
When creating a new armour wil (by adding a new armour to replace an old one) ALL armours will no longer allow you to change their colour, old or new.