Found on a recently fallen tree during the day.
In the field, though it was another of these: http://www.inaturalist.org/observations/73916
but looking at the photos they are quite different, this one is much more robust with different shape and colors
(Thanks to Mark-Oliver Roedel for the ID)
The Tai forest tree frog, Leptopelis occidentalis, is a species of frog in the Hyperoliidae family found in Ivory Coast, Ghana, Liberia, and possibly Nigeria. Its natural habitats are subtropical or tropical moist lowland forests, rivers, and intermittent freshwater marshes. It is threatened by habitat loss.