Many objects have creation parameters that you can access. To find out what these are, you use the showClass function. Try this in the listener window:
This shows all the parameters of a sphere. So, now we can create a more customized sphere.
sphere name:"test" wirecolor:(color 255 0 0) radius:20 segs:50
We now have a red sphere, named test, with a 20 unit radius and 50 segments.