it is totally random now. Your favorite tree can now spawn any/all colored woods, you just have to keep chopping.

Basically what it comes down too, is that if you are a "causal" player (my definition is someone who play less than 12 hours a week) you are screwed. If you decide to scrpit well you will eventually get some of the higher woods, cause you work nonstop, unattended. Although scripting is a violation of the rules. The only other options is to keep at it, you might get lucky. Or raise the gold needed to purchase these woods from luna vendors on your shard.

I did a fairly exhaustive test of the new changes before they went in, if you want I can send you summary of my findings. Or you can search here for threads, with the heading random resources, or something like that. was a fairly through discussion of the topic.