set :Vec to type {
   f32 :x,
   f32 :y,
   f32 :z,
};

set :Color to type {
   i8 :r,
   i8 :g,
   i8 :b,
};

set :Player to type {
   str   :username,
   Vec   :pos,
   Color :color,
};

set immutable :purple to Color {255 255 0};