Sentence:  The sins of Kalamazoo are neither scarlet nor crimson. / The sins of Kalamazoo are a convict gray, a dishwater <WSD>drab</WSD>. / And the people who sin the sins of Kalamazoo are neither scarlet nor crimson. / They run to <WSD>drabs</WSD> and grays—and some of them sing they shall be washed whiter than snow—and some: We should worry. 
Meaning of the word marked with <WSD> tags:  The colour of this fabric.