I didn't think to start counting until the first dye was trivial, but from that point, I turned in 81 black dye before I got the green. I turned in 90 green before I was given bleu. I turned in 102 blue before I was given the red.
In each case, except for the black, I had trivialled the combine on the first stack, and had to do 5-7 more stacks to get the next part of the quest.
Edited, Jan 16th 2012 12:31pm by xaanru

Acaana
Angurth
Bat Fur
Bat Wing
Belan
Berterine
Bitterwood
Black Gold Ingot
Blue Nightwort
Buffing Sheets
Cicino
Cloudy Potion
Cork
Curuloth
Dihedral Burin
Fine Hydroabrasive
Hemlock Powder
Hydroabrasive
Jar of Acid
Letters of Jonas Vol. 1
Lost Adventurer's Alchemical Notes
Mark of Aggression
Mastic
Measure of Wolf Blood
Medicine Bag
Storm Cloud
White Gold Ingot