Usually you will need to edit the parameters for your desired look. For blending dithering there are a couple of things that you can do, one is turning on MDAPT or other De-Dithering options in the ADV presets, they are later in the parameter list. You could also use an NTSC preset which will blend the dithering and colors.
Yeah that would be cool just if you can please credit the graphics creator and a link to this thread in your description.
One thing you can do is add your side graphic as an additional image
For example you could save a new simple preset which references the one you originally loaded, then set one of the images like this:
TopLayerImage = MyTexture.png