No, this isn’t the glitch that I posted a video on in FM5. Which still works in FM6 and you can watch it here: Forza 5 - Paint Trick Tutorial - YouTube
This is totally different, and, quite annoying.
Anyways, this glitch involves the “Manufacture Colors” section and the “Previous Colors” section.
I’m going to do a step-by-step tutorial to show you what I’m talking about:
1. Get into any vehicle
2. Go to the “Customize” tab and select “Paint Car”
3. Select “Paint” then “Paint Body”
4. Now go the “Manufacture Colors” tab and select any of the colors provided.
5. Save and back out
6. Go select a different vehicle other than the one you just painted
7. Do steps 2 and 3 again
8. Go to the “Previous Colors” tab and choose the “Manufacture Color” you just painted onto the other car.
9. Save and back out
Now, once you’ve completed these step, go “Race” or “Test Drive” the car you’re in.
When you’re in the race, the color is the one you picked from “Previous Colors”
Once you quit and come back to the main menu, the color is gone and the game changes the paint to a different color.
I’m not sure as to why, but my guess would be that because the color isn’t a stock manufacture color for that car, the game freaks out, and changes it to a different color.
I’ll post pictures if you’re not sure as to what I’m talking about