The Brown House Snake (Boaedon capensis) is uniform reddish brown, chocolate brown, pinkish, dark olive, or near black (especially in old specimens) in colour. Some may have reddish blotches on the front half of the body. Juveniles may have indistinct spots or mottling. A distinguising identification feature is the two light lines on either side of the head – one from the nose through the top of the eye to the back of the head and the other from the back of the eye to the angle of the jaw. In some specimens, the top light line continues along the first third of the body. A common species throughout Sub-Saharan Africa.
There are pale stripes on either side of the head, one from the nose through the top of the eye to the back of the head, and the other from the back of the eye to the angle of the jaw.
The Brown House Snake (Boaedon capensis) is uniform reddish brown, chocolate brown, pinkish, dark olive, or near black (especially in old specimens) in colour. 
African Snakebite Institute