This is a black retexture for the Combat Armor.
Pictured is the shadowed version with the excellent black vault suit by akalor and black Pip Boy by myself.
1. Copy texture folder to DATA folder located in your FALLOUT 4 installation folder. Merge if necessary.
2. If not done this already, edit Fallout4.ini located in FALLOUT 4 My Documents folder:
sResourceDataDirsFinal=STRINGS\, INTERFACE\, TEXTURES\, SOUND\