Hey Inferno,
For things like this, feel free to ask in-game or on Discord! But to answer your question:
When you 'drag and drop' a Rename Tome on an item, it will prompt you in chat:
You just enter the name of your tool/weapon, with the format/colour codes, and hit enter! You can find format & colour codes by just googling, but I've put the images in an
album here.
As an example, you would enter
&bMy &lEPIC &bSword
to receive this result:
Hope that answers your question!
Cheers