I tried, used a metallic enamel. Looks ok, but I need to find better colors not happy with the outcome. I should take more time as well, rushed it just to see the color. Could I go to an auto paint store and get a more accurate color?
I would just mix the color using one of the others in a kit. Use small amounts and mix well. If you over color, it isn't expensive to start again.
If you are not familiar with color mixing, I am not, I just know it can be done and have toyed with it, colors all start from 3 colors and tint to others.
This may help: https://graf1x.com/ryb-color-mixer-guide-with-chart-poster/
Your not going to like the prices of automotive finishes I can promise you that. Continue working with the enamels. With practice you can adjust the sheen, shine, tint, thickness, metalflake level, you get the idea. Also with the enamel you can mix and throw away a hundred times and still not reach the price of a pint of automotive paint.