I'm testing some designs, and I don't know how to make an area look contaminated due to radioactivity. I have two radioactive bees, so I want to express that somehow. I have two apiaries, which I want to be sealed off somehow, due to the whips which spawn from the 400 vis node which I plan to move somewhere. I am using the Mindcrack Pack. The area isn't very big, but this is what I have so far: