no i'm not saying ignore them. heck i'm not even qualified nor experienced enough to say either way.
I recall from either reading the blitz manuals or the amiga hardware books that hardware sprites, even on AGA are only 4 or 8 colours (i forget which) and there is a maximum (4 OR 8? i can't remember) that the system supports.
there is, however an interesting article here on EAB about Brian The Lion and how the sprites were done, and overlaid to appear more than the colour limitations of hardware sprites of AGA.... i'll have to dig out a link
EDIT- here's the link to our resident Codetappers breakdown of it
http://www.codetapper.com/amiga/spri...rian-the-lion/