In terms of specular maps, has anyone had success in getting anything other than a glossy finish on the default_01 "Calibrate" livery?
I've tried both F1 '21 color codes and new color codes taken from the '22 Merc, Alpine, Aston Martin, etc., but I can't seem to find a color code for a satin or a metallic finish.
If no such color code is found, then I fear that liveries that use more than 4 colors that want a metallic/matte/satin finish are not possible currently, because the liveries that use masking maps only support up to 4 colors.
In addition, the "New Era" livery that comes with the deluxe version of the game seems to have this weird holographic finish to it that persists beyond a diffuse, specular, or masking map. I don't think it's suitable to mod.