Haas looks set to use a yellow livery in formula one next year.
In recent days, the new American team has been practicing pitstops at its factory with a black-liveried show car.
But La Gazzetta dello Sport, the authoritative Italian source, says the actual race livery next year will be yellow, like the Ferrari logo.
Owner Gene Haas, however, rejected claims the team is little more than a Ferrari ’B team’.
"I keep getting asked that and my answer is unequivocal: no," said the Nascar co-owner. "Haas has an unique image and we will have our own way of working, even if Ferrari is an important technical partner."
And team boss Gunther Steiner played down suggestions Haas is skirting too close to the regulations, after Mercedes recently queried the close relationship between the new team and Ferrari.
"We are only doing what is permitted by the regulations," he insisted.