You can not dye plastic or vinyl. You can paint it with a flexible paint such as SEM. But it is still a paint, it can chip, scratch or wear through.

I think in person you will see that interior is a little darker than the pictures make it look. It would be a crying shame to ruin those parts by painting them. If you must have the same black interior as everyone else, as suggested, I'm sure there are members who would buy those parts off you so you can buy some nice black pieces.