Is anyone interested in me making a hack like this?
Example: original on left, hand-edited on right:

A little explanation: Over 2 1/2 years ago

I got fed up with Dungeon Explorer's dark and gloomy graphics, and wondered if I could hack the ROM to brighten its palette overall. What I did was
1) Find the palette locations in the game ROM
2) Extract them into mutiple 512-byte files
3) Write a C conversion program to change them from PCE 9-bit RGB to Pure RGB 32-bit words (00RRGGBB)
4) Import the Pure RGB as a palette on the Amiga
5) Edit the palettes in Brilliance on the Amiga ('cause it has a 9-bit palette mode)
6) Save the palettes as binary files again
7) Write a C program that does the reverse conversion
8 ) Plonk the converted PCE palette back into the ROM
As you can see, it's a convoluted process. It's kinda hard (impossible?) to do any realtime palette editing with the PCE file, either as a binary, or as it's running in an emulator.
Does anybody know of a way to speed up the process?