These could be purchased in the points shop or obtained via achievements
For example a race car livery or a tank skin
What would these skins do?
They give the same boosts as siver or neon material but also increased parts and scrap as well (depending on the price/ achievement)
an example
Tiger “131” for the tiger 1 as an achievement (win 10 “juggernaut” modes as the juggernaut using the tiger 1) (hard)