Manufacturer colour stripes

Today i was trying to change the colour of my 1965 Ford Mustang GT and i chose the manufacturer colours and i noticed that the blue stripe doesn’t change from blue to the colour that is displayed there. I noticed this in other cars to like the Pontiac firebird SD. Is there a way to fix this?

You are not alone, other XBox One players have experienced this and posted threads here (I have this problem with my XB1X), Turn 10 on one thread has marked it “Investigating” so I guess they are aware of it and are looking into it.