@Stevie G
Use a post production greyscale shader on a normal game or just use an emulator with the right settings to get some sort of idea and after some time turn back to colours. => Whoops a whole new world to explore! Greyscale is nice for movies but at least i don't want them in games as you play games much longer and there is so much more to explore in the colour dimension. Compare a greyscale drawn forest scenario and a forest scenario which has reasonably choosen colour palette. The second will beat the first one for sure.
You're entitled to your opinion but it's a matter of personal taste. On this occasion I prefer the lack of colour so will agree to disagree.
Stevie