Saw this thread and had to post,

it may not be so helpful,

But I've had some good luck using a tincture of ingredients:

Green Leaves, or Other Chlorophyll laden items,
Denatured Alcohol (Diluted to <%10 with distilled water)
Hydrogen Peroxide (%0.5 solution)

The Peroxide Helps as an oxidant, While I've only been able to
work through this with Greens and if you decide to try you might
have some discolorations at first, and I use Denat. Alcohol
(like the kind used for brush cleaning or paint removal) diluted because
of the strength, but this is optional i like it because it dries quickly.

Maybe It'll help