Printing in Colour to a Ricoh MPC4503

Ive been following this thread https://discussions.apple.com/thread/2783076

It looks like this is broken. Some mentioned issues after upgrading to Yosemite. I'm running High Sierra and the problem still exists. I understand the project here https://github.com/GreensboroDaySchool/MP-C4503-macOS-pxlcolor/releases has not been updated which is a shame. I cannot understand in all this time that Ricoh have not released a proper PCL6 colour driver for their devices, but I guess that means more sales of the PostScript add-on.

The files are sent to the printer but never appear. The CUPS script to fix this in the GITHub bubble doesn't fix the issue.

Anybody had any success printing in colour to a Ricoh MPC 4503 in colour with all options. If so what did you use?