I would guess it's fine, but keep in mind the 4 color limitation.
This is the mock-up I created. I recolored the Kenney Macro Roguelike sprites. The Bed and train carts I drew myself. I used the original GB color palette: color palette.
This is the mock-up I created. I recolored the Kenney Macro Roguelike sprites. The Bed and train carts I drew myself. I used the original GB color palette: color palette.