but can any techies tell me...the parallax layer that the character sprite and main background sit on, they are all made out of the same set of colours...i.e Jim is made from the same palette as the trees, buildings etc. Same goes for the enemy sprites.
Is this a technical limitation?
The ST can show 16 different colors from a palette of 512 , So indeed if there are 16 different colors used, then no more other color options are available for the character The Amiga had more on-screen colors available . Later when the STE was developed , the possibilities became larger, it kind of was the answer from Atari to the Amiga (also stereo sound and 4096 colors to choose from ,together with a Blitter chip ) But there weren't very much games developed for the STE
p.s. Pure technical spoken it wasn't possible to display more then 16 colors at one time , however .. some (read MANY) intelligent programmers,especially in the demo-scene bypassed the 16 color at once limitations, and programmed some really amazing stuff that shows that technical limitations also could be broken ..