i’m wondering if there is a way to have a list of unused colors/ materials to choose from. this would be a great timesaver in preparing models for rendering
If you are looking for a way to find and purge previously loaded colors/materials that are no longer used in your model, the easiest way is to use the Purge Unused feature (Window>Model Info> Statistics). This will remove all the remnant unused materials and components from your model.
It is advised to do this periodically as it helps keep you the model file size down significantly.
There is also a great plugin called Material Tools in the Extension Warehouse that has a feature that lists all the materials in your model by SIZE. This is very useful when preparing models for rendering.