'29 paint color..

[Martinbuilt]

I'm piecing together a '29 business coupe. It's all from parts, so i'm not overly concerned about it being totally right.
I picked up a pair of super-clean doors. They appear to be original paint (tired, but still...?
If i wipe thinner on them, they are a really dark blue, with a black beltline, and maybe wht pinstripes?
I'm tempted to paint the rest of it to match.
Is there a name or code for the blue?