I’m trying to paint my model but for some reason when I select a base coat from the materials>fill color>save as soon as I shut down and boot back up the color is rest to default red? It worked on other parts of the model.
When you filled the object, was Draw>Rgb on?
Have you tried changing materials. It sounds as if maybe when you filled the object you only filled with color. That means that the material is still live and so when you restart ZBrush it’s switching to the Red Wax material. Changing to something like the Fast Shader will let you see your polypaint without interference from the material.