I`ve got pre-comped 3D cube (buit using shapes).
I need to change colour of this pre-comp.
I tried to use Fill (standart AE plugin), but it works only when layer isn`t 3D.
How can I control colour of pre-comp without touching shapes colour (I mean how to control hole pre-comp)?
Have you tried using any of the effects under color correction on your pre-comp? You could use a combination of CC Toner and Levels or Tritone and Hue / Sat., etc. This should allow you to alter the color of your cube.