[Coco] AGD converted games

[Lee]

First, let me say I think this project to port these games to the 6809 is
wonderful!  The work put into it deserves tremendous kudos!  Thank you to
any/all involved!    It seems like the original color of the games was not
able to be ported.  I say that because when I run them they appear to be
black-and-white with coincidental artifacting.  I'm using the Switch-A-Roo
cable and switching to RGB make it crystal sharp black-and-white.  I've
Googled videos of some of them on the ZX Spectrum and they are in color.
Is the reason they are in black-and-white because the image data or the
engine makes it difficult to retain the original colors when porting?  Or
is it not really possible?  If it is possible, would it be feasible (if
someone wanted to take it on) to start converting these to have their
original colors?