When viewing a taxonomy listing or single review page, the review menu item in the main menu is not highlighted with the appropriate color.

Use the title attribute in the custom menu to make the main menu ancestor highlight appropriately. It must match the name of your review type (but the title can be anything you want, as well as the name of the page and the page slug). Basically, review page custom field value and custom menu item title attribute must exactly match the review type name you have specified.

Make sure the capitalization matches! Do not use lower case for one and upper case for the other.