how to retire the pillars in the plant

[Maffin1986]

Hello everyone, I have a problem,I can't figure out how to change the family of the pillars to give me the chance to change its display in the plant, which with other elements you can do. . .
thanks in advance

 

[gfrank]

retinatures change from material properties.
the default columns of the revit archive, did not enter the parameter of the material, then:
- modify the properties of the pillar material using the family change command (of the pillar);
or
- insert into the pillar a parameter of material, which becomes manageable directly in the project