For the hurt, etc.; literally, because of the breaking, etc; I am broken; comp. Jeremiah 23:9, and the phrase "broken in heart" (Isaiah 61:1, etc.). The prophet feels crushed by the sense of the utter ruin of his people.
I am black; rather, I go in mourning (so Psalms 38:6; Psalms 42:9). The root means rather "foulness" or "squalor" than "blackness" (comp. Job 6:16, where "blackish," an epithet of streams, should rather be "turbid").