Reaction Roles
Let members self-assign roles with buttons or reactions. Design it here, then post it to a channel.
Colour roles (one-click setup)
Instantly create a set of pretty colour roles and a pick-one menu. Everything is prefilled, rename the colours or tweak the message, then create.
This creates real roles in your server and posts a pick-one menu. The bot needs Manage Roles and its role near the top.