PAINTS

I should have said this before but a part is indeed a ratio like MusicCity said but therein lies the problem with model paints. There not all the same consistency from brand to brand and even within the same brand. One drop of a very thick and pigment rich paint is a lot more than 1 drop of a less thick paint.

ok

QUOTE: Now when you say 1 part... what exactly dose 1 part = ? Like how much paint?

Doesn't matter because it's a ratio. They can be drops (2 drops red, 2 drops green, etc.), ounces (2 ounces red, 2 ounces green, etc.), quarts, gallons, whatever unit you want to use. You only have to be consistent and use the same units for both.

Now when you say 1 part... what exactly dose 1 part = ? Like how much paint?
well your at it how do you make red brown?
I have a paint container of brown, but would love to know what I could mix it with to get red brown cause then I would have a life supply

Thanks

Oh boy, this is a fun question with no correct or easy answer but I'll try.

Olive Drab - 2parts red, 2 parts green, 1 part blue
Neutral Gray - AFAIK 18% gray which means approx. 4 parts white, 1 part black
dark green - depends on how dark you want it - start at 4 parts green, 1 part black

Maddafinga is right you need a color wheel and all kinds of issues like value, hue, chroma, shade, tone, tint need to be considered. In the end though you can throw all the color theory rules out the window when it comes to model paints, IMO they just dont follow the rules very well.

Is there any particular brand your trying to replicate?

How to make them? I guess that you mean how to mix them eh? You'd need a color wheel to help you, and a set of basic primary color paints. You'd just have to mix a little at a time and keep checking the color as you go. I can mix paints okay, but I find it's quite a bit easier just to buy what I need, or as close as I can get to it.