Here is where you can find all of the paint templates:
https://ir-core-sites.iracing.com/members/member_images/misctemplates/all_iracing_templates.zip for the cars
https://ir-core-sites.iracing.com/members/member_images/misctemplates/helmet.zip for the helmets
https://ir-core-sites.iracing.com/members/member_images/misctemplates/driver_suit.zip for the suits