Default PE is a double sized resolution of the default textures (32×32 instead of 16×16) in Minecraft PE. As a result, all textures are more detailed which make them look better. The textures still look much alike the default texture pack as they have the same style and colors but at a higher resolution.
Download Default Minecraft PE
Windows Phone 8.1: Default 32×32 PE WP 8.1.zip – 1.9 MB