Change pointsizes, background, etc. in Object3D objects

I am logging pointclouds using numpy arrays following the shape [x,y,z,class], all integers.
Logging works, but the points are tiny and barely visible. Is it possible to make them larger?

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Welcome to the forums!

I haven’t worked with point cloud data so I’m not sure if there’s a standard way to rescaling them:

Did you get a chance to take a look at the Docs Section here, does this not answer the Q?

Thanks for the answer!
Sadly no, this only answers how to change point colors, not how to change point (marker) sizes or background color.