rRename is a plugin that allows you to rename items. It also allows you to use hexadecimal color codes (e. g. #7a0000). It's highly customizable. Example config:
version: 1.0.0
appearance:
prefix: rRename
prefix-color: 771177
color-normal: FB336D
color-error: 7a0000
economy:
#When enabled, rRename removes a specific amount of money from the players balance when renaming an item.
enabled: false
price: 50