(Bukkit/Spigot/Paper) How to create clickable/hoverable messages and send them to a player. · GitHub
spigot chat color with symbol Code Example
Minecraft Java (1.17) how to use custom color/formatting on signs/in chat? : Minecraft
When naming a shop, the Shopkeepers plugin uses the player's next chat input to set the new shopkeeper name.
With that being said, you can find all of the different kinds of color codes for Minecraft below.
They wouldn't have to do all the colors just the basic set up, Im really busy right now and cant do that.
By default, color codes are not allowed to be used in shopkeeper names but they can be enabled inside the config.