Examples :
*HeroQuest : still has monochrome feeling (2 blue shades being used) while actually being properly 2 bit re-coded...(ditherings use 3 colours gradiants instead of the Speccy's 2, and the grey add a bit more colour feeling...sort of) ...
*Strider has recoloured sprites, displaying no attributes, but Backgrounds remains monochrome.
*Shadow of the Beast : (perhaps...) No real 4 coloured ditherings or even additionnal colours thanks to dithering the 2 medium colours.