No Maacos over here, but a relative who immigrated to Chicago in the 50s used to operate such a Joint in the 70s-80s and I visited the shop once. Still got two ballpens from there which are about the same Quality.
Doesn't look like a factory color. Should be B2 Glacial Blue Metallic (I'm thinking from what I see on the firewall and core support) or maybe Q5 Coral Turquoise Metallic.