Sentence:  Beyond that misty <WSD>gray</WSD> of the rain , he saw the stretching hutment , low diminutive log cabins , chinked with mud , with doorways a man would have to crouch to get through , with roofs of tenting laid over boughs or boards from hardtack boxes , or fence rails , with cranky chimneys of sticks and dried mud . 
Meaning of the word marked with <WSD> tags:  a neutral achromatic color midway between white and black