Hi all,
I’m coming out of semi-retirement to post something about this officially. There are many talented painters in the Forza community that can create amazing replicas of real-world racing liveries. In my experience, one of the (many) hurdles that livery designers have to overcome is that Forza still uses a version of HSB codes for their in-game colors.
From my experience, HSB color codes are not nearly as widely used or publizied as some other web color code systems such as RGB or HEX. These types of color codes can easily be found online just through a little Googling. Search results for HSB color codes however are not as common. There are a wide variety of conversation websites that can easily transform RGB and HEX to HSB, but as Forza uses a different version of HSB, these conversations are never perfect. Painters still have to do more work to find the right color. It would help the livery designers of Forza had the option to type in these colors and have the in-game editor convert it for them.