Alright man, well bluing is usually an indication of damage. The spots on my cakes where they got handled the most turned a little blue. While I don't think it means the cakes are unable to fruit now, I don't think they'll be able to fruit *at* the blue spots. The blueing could be a symptom of whatever's keeping them from fruiting. First I'd move the light farther away. Shrooms don't need very much light at all. Plus how are you keeping humidity, you have perlite, but that won't keep the entire room humid; you need to get a lid.
You should also put something on the sides of that container, I taped black (opaque) plastic to the sides, if you do that light won't hit from all directions, and when shrooms do grow they'll grow up instead of every which direction (believe me you want them to grow up). Also the lids you use will keep humidity in, but get some plastic (black) to put over the top too. The shrooms grow faster in the dark (i've found this to be true), and only need a few hours of some light (just take plastic off of top and have light in room on) cause they are phototropic.
Then I'd make sure to air out the chamber about twice a day, maybe more. I'd only mist right after you air it out, to get the humidity up quickly. Then the perlite will keep it humid.