We have three types of marine plywood: Meranti, Mixed, and Okoume.
Mercanti marine plywood has a top-grade veneer made of meranti mahogany, and the colour is nice and consistent. (Featured picture is mercanti).
Mixed marine plywood has a veneer made of mixed species (usually some kind of mahogany) and the colour can range from yellow to brown.
Okoume marine plywood, also called Gaboon, is lighter than meranti and easy to bend. The grain is similar to mahogany and colour is usually light brown to pink.