*Head over heels : no attributes and the no-rastercolourchange policy enable to not waste CPU ressources uselessly.
*Deflektor : could have been better yet the concept of the game make it a clever port.
*Switchblade : the GX4000 cartridge version is displaying extra features such as large vertical ditherings in a lot of Red shades (sky) or PLUS Hardwired sprites "patches" as extra coloured tiles...this is more than enough to get a properly coloured feeling.
Some Speccy port "done right" may also use Mode0 instead of Mode1... hence being graphically fully CPC (yet tiles or sprites are still compairable).