You helped me there and I wondered what would have prevented me from misunderstanding. Would I have understood the difference between standalone body and extrusion if there was a significant difference without me double clicking the part to distinguish? I think so. For me it would be helpful to see where the bodies are and where its just extrusions. An example would be if you split an object. There are some new lines on the object but nothing else indicates they are two now. One not so shallow step in the otherwise shallow learning curve in Shapr is the difference between object and extrusion. But I guess you can close this, colors is bad because of grouping anyway.