This command lets you change the name on any item as many times as you wish - you can even use fancy colour codes!
To do this, use /rename <name>
Here is a tutorial if you need any help with adding formatting such as colours to your title: https://tinyurl.com/lotrsurvival-ec
Items lose their colouring after repairing them, due to a bug. You can easily fix this if it happens using /fixname, which this purchase will also give you access to.