Here's some examples of dithering being used in order to do effects like gradients and pseudo-transparency: http://retro-sanctuary.com/comparisons%20-%20differ

Here's some examples of dithering being used in order to do effects like gradients and pseudo-transparency: http://retro-sanctuary.com/comparisons%20-%20differing.html http://retro-sanctuary.com/comparisons%20-%20differing.html