This sketchup extension is well matched with SketchUp 2017, SketchUp 2018 as well as windows platform.
The plugin can be used to paint any sketchup models based on #Hex color values by applying a series of toolset.
Brief description of tools:
Hex Brush Tool: The Hex Brush Tool paint faces through #hex color values. The users will be able to click & drag the mouse to incessantly arrange paint to the SketchUp model.
Hex Sample Tool: The Hex Sample Tool will opt for the color value of face entity to paint with.
Hex Input Tool: The Hex Input Tool facilitates the users to put in a #hex color value to paint.
Hex Magic Wand Tool: The Magic Wand Tool picks connected faces with the equivalent color.
The plugin can be downloaded from extension warehouse extensions.sketchup.com