This collection comes in Universal Render Pipeline (URP/Universal 3D) as default. But if you have a Built-In or High Definition (HDRP) project you can easily switch to Built-In or HDRP by importing the provided upgrades inside the "Legacy" folder.
Colorize for Built-In Render Pipeline
If you are using the Built-In Render Pipeline you can still use the Colorize materials/shaders if you install the “Shader Graph” package from the package manager. The legacy Built-In Render Pipeline does not include the Shader Graph package by default.
