I use car paint over the top of a plastic primer/undercoat (all rattle cans)
If you buy the Winning blue colour from Mx5parts beware the spray nozzles aren’t the best on those cans, well the weren’t on the True red I bought. I changed them to a better spraying nozzle (had spares I kept from other cans) as the nozzles began to splatter on the 2 cans I bought.
I’ve still got this below to make up, had it a few years. Used to make models when I was a little younger and take some to shows. They’ve all gone now but still have an urge (one day) to start another.
Metallic finish is notoriously challenging in scale.
It’s very easy to create a metal flake finish akin to a hot rod because the metallic pigments can be quite large.
I don’t have the answer.
I tried creating a green metallic finish back in 2020 by adding a drop of silver to a solid green.
It wasn’t entirely successful.
I got mine from Japan, just like the real thing😁
At the time that Particular MK3 kit wasn’t available in the UK, all said out of stock.
Amazon UK had them to order with about a 4 week delivery time @£35 approx.
And I’ve still not built it. It’s all this retired living, had more time when I was working.
Looking at a few on line photos - the Tamiya TS19 looks pretty close.
Some forums are saying that if you put TS-19 over a silver base it lightens up a touch.