Freaky. I tossed some white onion, yellow onion, garlic cloves and fresh ginger in the blender for a butter paneer masala recipe. I had a little too much, so I put the uncooked portion in the fridge, and shazam! it turned sort of aqua-y in color. It's not old enough to be mold, so I'm gussing that there is some nifty chemistry thing going on. Anyone have a good guess?