Yes, our assumption is that the French will be the exact same. If this is not the case, it should be disclosed and an iterative fee will be applied for the review of the French layout. If the changes result in a significant change to the piece (e.g., a whole new page), a separate fee may be required.
The treatment does not extend beyond the cover. The reason for this, is that it can be easy to unintentionally emphasize a heading, chart, graphic etc, through the addition of colour.