Final answer:
True, additional RGB inputs can generally be added to Mixer nodes in graphic software like Blender to allow for greater flexibility in color blending and texture compositing.
Step-by-step explanation:
The question "You can add additional RGB inputs to Mixer nodes" refers to a feature in digital graphics software, such as those used for 3D modeling and image composition, where a Mixer node is used to combine multiple color inputs to create various effects.
The answer to the question is True. In software like Blender, Mixer nodes are used within material shaders or compositor to blend colors or textures. These nodes typically have a predetermined number of color inputs, but additional RGB inputs can usually be added if more sources are needed for the desired effect. The ability to add inputs enhances the flexibility of the node and allows for creating more sophisticated materials or composite images.