Bingo!

After weeks of searching it is so satisfying to find almost exactly what I've been looking for. I found this tutorial this morning, http://vectips.com/tutorials/create-grainy-textures/. It covers the style I've been trying to figure out how to do almost perfectly! I've been messing around with something similar recently but it didn't look exactly right. Unfortunately I'm a little behind where I wanted to be at this point but that's why I planned extra animation time at the towards the end of my schedule. Now that I know how to make my images look the way I want it should be easier to get them done! I plan to have a few stills done by class tomorrow.