SHROOMIEZZ!!
Looking good man!:thumb_up:
And contamination isn't the end of the world, especially when you're in the final phase of the project. Like PT said, those discolored spots were probably bruising. It happens regularly, and often cubes will bruise more greenish than blue. It can look quite like mold. The mold that turns green starts out looking quite like mycelium. It's white, but has a bit different texture. If it reaches the green phase, it's pretty much too late to get rid of it, and you'll just have to live with it. It often won't spread to fast, unless your cakes are getting older, running out of food and weaker.
Oh, and you may know this, but the right amount of FAE decreases your chances of mold. So, it's a tricky balance between maintaining humidity, and fresh air. Isn't growing shrooms so much fun? Talk about a challenging and (hopefully) rewarding process.