Test some now.

Everything I've read online about color is to harvest a little over 15% amber to get a good stone. I think anything over 40%-45% will be mostly body high. And I think some strains never go amber but stay cloudy.

Here's more info:
http://boards.cannabis.com/colorado-...s-harvest.html

"general consumption people should use herb cultivated when around %30 amber and **cured**."
The Importance Of Matured Cannabis | CLEAR