Hi is possible to have a button added lock random color texture from changing in the next frame
Itoo forest has an option to show only grass/trees in camera view only to reduce the amount of trees not seen by the camera. But because of this random color is generated every frame making trees change leaf color every frame.
In video you can see grass changing texture seed every frame
Here is their response
"itoo forest reply
"Thanks for reporting the problem. It seems random color texture uses the object's geometry to compute random seeds, so in this case it generates different values because geometry is non-static.
Unfortunately we cannot fix the problem. This is something should be checked by the Otoy team.""