This is really great! Would it be possible to update the controls so that it would work fully when converted to the GX4000? At the moment, you can play it very well on the GX4000 using button 2 to select a colour and button 1 to select the specials, but there's no way to press H for a hint or C to end the level (although I still completed the levels by just matching every remaining colour that was available).
Maybe a long press of button 1 for a hint and a long press of button 2 to collect at the end of a level?