Mold in crawlspace

A couple months ago, I discovered that our chimney was leaking from somewhere up top down directly into the bottom of the firebox in the crawlspace. No water ever entered anywhere inside the house or the fireplace. It was sheer luck that I found it as it was hidden behind a bunch of insulation. The area where the water had clearly been leaking to in the crawl had developed a bit of white mold growth. The guy that I had repair the chimney went under and scraped off the mold that he could and then sprayed it down with a bleach solution (which I have since read doesn't really do a whole lot to kill mold as it can't reach into the pores of the wood to kill the actual mold membrane). He also sprayed it down with something called Mold Control (sodium carbonate, I believe).

I went to check it out about a month later and it looked like this:



Some of the white mold was still there, as you can see above. So, I sprayed it down with distilled white vinegar which my research indicates is better than bleach for this type of thing. That was two weeks ago. Today, I went back under to check again and found this:



It looks like the white mold did die, but if you look at the upper and lower left corners and couple of other spots, you will notice a new turquoise-green color/growth. My question is, what is this? A different mold variety? Mildew? Some sort of color change that white mold goes through when dying/dead?

Need some input on what's going on here and some insight on how to fix it. I've read up on a few mold remediation companies here and found they use hydrogen peroxide. Have also heard copper sulfate works, but have seen other information indicating mold can adapt to higher copper ion levels and thus, not be significantly affected by it.

Any advice is appreciated!

#inb4yourhousehasAIDS