Guys im a Maya person new to vue im following tutorials done using VUE 8.5  and im running VUE 9.5  on a mac pro, everything was smooth till i got to the point of trying to have color variations to my forest(the one im working on). heres how the instructor did it (i have attached 2 renders one before the gradient was applied and the one after)

1.Double click the material to open the advanced material editor

2.click the color tab

3.check the box next to Variable color

4.double click in the box next to parametric to bring up a list of gradients

5.choose a gradient named FIELDS

6.Click populate

Well the problem is its working on his trees and when i do the same thing to my forest all trees are getting realy dark instead of getting the same results the instructor is getting which is the origial green trees and some brown trees in the forest.  Is there a different way of doing this in VUE 9.5    PLEASE HELP!!!!!!!!!!

Lionhead