Texture alpha channel

[Freak-DS]

Here is a picture which explains what alpha color is used for what effect ingame:



Basically, the NFS 4 alphachannel only supports six different colors. Sorted by brightness, here they are:

1) RGB 255 - White - Just solid texture without colors or transparency, 100% RGB channel.
2) RGB 230 - This is the first colour slot, it's used for the primary body color.
3) RGB 182 - Slot two, used for interior color.
4) RGB 118 - The third slot is used either for decals or for the convertible roof, it's the secondary body color.
5) RGB 46   - And the last of all four color slots, is the driver hair color, which is used for a second decal color in upgrades, too.
6) RGB 0    - Black - 100% transparent, RGB channel pixels will not be displayed.

The usage of white and black cannot be changed, however, you can freely use all four color slots for any parts you want, they don't have to be assigned like EA did.

Additionally, these color codes work aswell:

224-Main color
160-Interior Color
96-Secondary Color
32-Driver hair

(Thanks to AJ_Lethal!)