Why are some of my textures very dark when they are not in direct light? (images included)

[crace96]

The pictures are of the same house, one in direct sunlight and one not. Alot of my textures are very dark, almost black when not in direct sunlight. I am pretty new to unity and cant figure this out. Any help would be awesome!

Using: Weather Maker, Village Interiors/Exteriors, Vegetation Studio

[TheEmeraldRuby]

A fix to this problem might be to create a second directional light shining another way and set Shadow Type > No Shadows (to avoid a floodlight look) and fiddle with the intensity.