SketchUp Plugin.
Requirements: 
SketchUp 2019.2 or newer.
Windows 10 Operation System.
Features: 
Get Material, Layer, Definition by pick entity, then Set to other entities or replace all entities of the model which matched the Get picked data. The Set range can be defined by a selection or all model's entities.
Misc: 
Appy coupon vbofree to get the plugin for free, or buy me a beer with $1, thank you.