from what I remember, all you need, it’s been a while…
Cadmium red (yellowy red)
Cadmium yellow (reddy yellow)
Lemon yellow (greeny yellow)
yellow ochre
alizarin crimson (bluey red)
Ultramarine blue (reddy blue)
cadmium/prussian blue (yellowy blue)
Burnt umber
burnt sienna
zinc white.
You can mix an approximation of any colour or tone you see using them given practice and understanding. get some books out, they are really helpful when you get started. forget the warhammer pots, and forget about making colours “lighter” or “dakjer” using black and white. go to basics with colour charts, mixing colours, you can make grey by mixing yellow and blue, orange from yellow and red, black from ultramarine and burnt umber, etc. It’s not about the names of the colours, but their properties. Burnt sienna is a really red brown for instance, so call it reddy-brown! burnt umber is a dirty bluey-black brown. I could go on all day…..
correct me if I’m wrong catflees!
I’d suggest going to a painting forum, this one’s full of engineers and IT specialists!