Vexed

[someone]

I can see there's a difference between the 2 emulators, but can someone with a real Microbee determine which one is correct?

Colour variations can occur for a number of reasons even on real hardware particularly on early colour monitors and really shows up on shades of brown.
When using ubee512 someone uses the fine tuning colour adjustment CLI params when needed.

Code:

ubee512.exe --model=p128k --monitor=colour --video-type=gl --rgb-03-r=0 --rgb-03-g=192 --rgb-03-b=192