Curtis Holt writes:
I have just released version 5 of the Holt Tools addon for Blender, providing a suite of useful workflow tools to help you organize your blend files and automate artistic processes.
This update includes operations for automatically getting and setting default node group parameters, as well as new ‘form collection’ options to create collections of objects based on various criteria. You now also have the ability to modify light values for both lamps and material light sources at the same time, as well as set the color for all light objects in the scene with one click.
Thanks for watching, happy Blending, and have a great day!