publik-base-theme/static/aix-marseille-metropole/config.json

{
  "label": "Aix Marseille Métropole",
  "variables": {
    "theme_color": "#0d1d2d",
    "email_header_asset": "emails:logo"
  },
  "settings": {
    "combo": {
      "COMBO_ASSET_SLOTS.update": {
        "emails:logo": { "label": "Emails : logo" },
        "header:logo": { "label": "Têtière : logo" }
      }
    }
  }
}