You can import color set materials downloaded from Clip Studio ASSETS using the Color Set palette in Clip Studio Paint.The process depends on your dev
Assets: How can I import color set materials? - Clip Studio Official Support
Release Notes - Clip Studio Paint
Transferring CSP To a New Computer
Assets: How can I import color set materials? - Clip Studio Official Support
Boost your efficiency with color sets! -Using palettes and adding/removing- “Tool settings/coloring #8” by ClipStudioOfficial - Make better art
How To Install And Use Materials In Clip Studio Paint - Don Corgi
Assets: How can I import color set materials? - Clip Studio Official Support
Assets: How can I import frame or layer template materials? - Clip Studio Official Support
Release Notes Clip Studio Paint Ver. 2.0
Downloading and Installing Assets
An Introduction to Clip Studio Modeler