Here is where you can find all of the paint templates:
https://members.iracing.com/member_images/misctemplates/all_iracing_templates.zip for the cars
d3bxz2vegbjddt.cloudfront.net/members/member_images/misctemplates/helmet.zip for the helmets
d3bxz2vegbjddt.cloudfront.net/members/member_images/misctemplates/driver_suit.zip for the suits