I've been wondering about this for a while now, and I decided to get some opinions about it: If you place partially transparent pixels by hand (for outer aa, etc.) and still watch the number of colors you use (each color is a RGBA set here), is the product still considered pixel art? I would think it would be perfectly fine with a simple constant background, but if it was something more complex and unpredictable, would the loss of control over the final displayed image be enough to make it an impure form of PA?