1847 T. T. Stoddart i. 9 On the water becoming brown or porter-coloured,..[trout] assume a fine yellow..appearance.
1915 J. Buchan iii. 62 A culvert which spanned a brawling porter-coloured river.
1990 (Nexis) 29 Apr. And so it is, with its pot-bellied stove and ancient, sagging porter-coloured wooden inside.