What do the colors mean when i enable "Are Regions Shown" and "Are Owners Shown"

I’m not sure if this is the correct category that this question belongs to

I enabled Are Regions Shown and im wondering what do the colors mean? I know what red, green and white mean but I don’t know what purple means in Are Regions Shown and what black means in Are Owners Shown, The black color occured when I made my character’s HumanoidRootPart massless and the purple color happened when I used a WeldConstraint that was parented in my HumanoidRootPart and welded something using it.

I’m not so sure about the “are regions shown” but with the “are owners shown” that has something to do with client and server NETWORK OWNERSHIP