In case anyone wants to play around with my latest project (Retroize), it's available at my usual place for odd ball software. My software is free. No source code is available for this one. I want to hang onto my process.
It uses my own specialized algorithm for tight ordered 2x2 dithering using custom color palettes. I wanted a process that dithers much in the way old timey 8bit graphics were. It has the ability to emulate many of the Commodore 64 graphic modes using block restrictions. Load premade palettes (JASC-Pal or CorelDraw), create our own, 'lick' colors off an opened image. Adjust image settings, etc. Lots of fun stuff! (IMHO).
Have fun. Let me know if there is any problems.