Mold In My Paint Jars

So yeah, I cracked open the Hooker's Green and the Payne's Gray today in an attempt to follow through on some inspiration I had weeks ago (thanks Adam). It HAS been a long time since I hit the canvas. I have been staring at this unfinished painting for months or maybe years, not sure how to complete it. I keep telling myself...if you 'uck it up, no loss. However, when you do 'uck it up, you might just be telling yourself you don't have it anymore.

So back to the point. Mold in the paint. I scrape it off the top, get down to the thick stuff, and decide, well, it is a nature painting, what's a little mold (uptight painters cringe here). I have heard this could happen, and I should keep the paint in the fridge, but with this long of a creative break in painting, I'd rather have food in the fridge. Cheese with mold on it rather than acrylic.
I guess it is a pure luck that the paint does not smell like moldy cheese.

So this painting is an Acrylic base piece, abstract of wild grass seen while driving down the highway through Arizona /New Mexico. Oil sticks and oil pastels over the creamy yellow background were used to create the grassy lines.

I am planning to hit the whole piece with a spray bottle of Hooker's Green and another filled with Payne's Grey. I will attempt to give the canvas a horizon line in a proportionately appropriate place, still to be determined. I am hoping by mixing the paint with water, not medium, it will lay over the oil lines and create a resist, staining the area behind the lines. In a practice run, it seems to work, but still the acrylic seems to be altering the color of the oil pastels somewhat. Could be the canvas has sat too long and the resist of water on oil has weakened.
So I am hoping for a nice surprise with the altered colors. Surprises are nice, except in the form of mold in the paint jar.