I create a white sphere at the beginning of my code, and later, after some 
lines of code, I change the color and the position of this sphere.

(def sphere (doto (mesh.sphere.)
  (.SetColor white))

(...)
(...)
(...)

(.. sphere SetColor red)
(.. sphere SetPosition 5 5 0))


To change the color and the position I need to repeat "sphere" each time. 
Is there any way to avoid repeat "sphere" each time, for example using 
"doto"?

(def sphere (doto (mesh.sphere.)
  (.SetColor white))

(...)
(...)
(...)

(doto sphere
  (.SetColor red)
  (.SetPosition 5 5 0))

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