I tried using alkanet root to do a lavender soap and mine ended up turning green. Here's a link to the picture from the photo gallery:
http://cdn.soapmakingforum.com/attachment.php?attachmentid=15316&stc=1&d=1437669355
I used powdered alkanet and put a pretty good amount in my oils to infuse but I only let it sit over night. I read that sometimes alkanet can go green due to the PH and may slowly morph. The alkanet root infusion turned green the moment I added it to the batter. The bars still look exactly the same colors and I cut those on 7/23. I may give it another go with the alkanet root I infused a couple of months ago to see if time makes a difference but at this point, I think I might just use purple clay for my lavender soaps.
Question of my own now: have any of you guys experienced some scrubbyness in your soaps from infusing the oils with herbs? I had used lavender/calendula/alkanet root infused olive oil in my lavender batch and for some reason, there's like a slight grittyness to my soaps. The soaps feel smooth and fine, but you get the exfoliating grittyness when you start using the soap. It's def not undissolved lye because I always strain my lye and zap tested. I remembered seeing some gritty stuff on the bottom of the strained infused oil but didn't think much of it and now I wonder if it's little bits of plant matter or some micro bits of the alkanet root that made it through the strainer.