If R,G,B,BRIGHT signals from ULA is connect to adress bus A0-A3 on sram memory with palette, data output from SRAM is possible use as new ZX palette. SAM COUPE use same resolution 256x192/16 colours, but each ZX colour can be set as 7bit RGB value. This palette interface can be used on any ZX clone.
I can make this palette interface.

examples of SAM COUPE graphics(256x192/16 colour per pixel with palette):
http://www.worldofsam.org/flexinode/termstable/3/5
http://www.worldofsam.org/files/acti...TPOTRMmain.png
http://www.worldofsam.org/files/active/0/DoEboss.jpg
http://www.worldofsam.org/files/active/0/klax.jpg
http://www.worldofsam.org/files/active/0/lemrun.png
http://www.worldofsam.org/files/active/0/snap0024.png
http://www.worldofsam.org/files/acti...g%20screen.png
http://www.worldofsam.org/files/active/0/snap0087.png

SAM COUPE: ZX mode with hardware multicolour + palette:
http://www.worldofsam.org/files/active/4/snap0005.png

videos:
http://www.youtube.com/results?searc...e&search_type=

VELESOFT