Dyeable Shulkers
Dyeable Shulkers is a server-side mod, clients don't need to install it.
Shulker Boxes
You can dye shulker boxes directly on ground without breaking them...

as of version 1.2.1, a brush is used instead of a water bucket to clean shulkers
...and even rename it !

Shulker Entities
You can also dye shulkers.

Since version 1.1.0, you can enable and disable some functionalities with the /dyeable-shulkers command or by editing the dyeable-shulkers.properties file in the config folder.
External resources
Project members

KGriffon
Owner
Technical information
License
MIT
Client side
unsupported
Server side
required
Project ID
