I achieved the green on my lp1s with this:
It's your basic every day hobby grade acrylic art paint to be found in arts en crafts stores the empty square by my thumb indicates that it's transparent. I mixed it with some water to make it easier to spread with a cloth. Obiously you would need a slightly different tint of green your example is more olive. The nice thing is it holds its colour when you water it down to make it easier to work with so what you buy is what you get. Or if you don't find your taste they are mixable.
This stuff is easy to apply and dries VERY quickly. I'm not saying it's the only way to go but definitely worth considering for your test runs.
I first tried a green stamp ink that didn't do the trick at all. The water based stamp inks will get you darker results than what you're going for.
If you go with tru oil take your time between coats and less is definitely more dont be tempted to slop on too much at once even though it looks great while you're doing it it cures worse than when you slowly build up very thin layers of the stuff. And make sure to work on a clean dust free environment any hair, dust or other unwanted crap will easily get stuck in the finish at this point.
We have 2 cats with long fine hair and one of them is white trust me it was a struggle, at some point i considered getting a space ship type air lock at the entrance to the workshop lol.
Also beware of cheap steel wool it falls apart into tiny fibres that end up everywhere by the time your done having a brush and vacuum cleaner handy near your workstation definitely helps.
Good luck.
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