if settings.startup['legacy_icons'].value then
    data.raw.item["fi_materials_gold"].icon = "__248k__/ressources/legacy_icons/fi_materials_gold.png"
    data.raw.item["fi_materials_titan"].icon = "__248k__/ressources/legacy_icons/fi_materials_titan.png"
    data.raw.item["fi_materials_neodym"].icon = "__248k__/ressources/legacy_icons/fi_materials_neodym.png"
end