What is the figures of speech in your mistress eyes are nothing like the sun?

I think a possible theme for this

poem is loving one another's imperfections. This poem shows us the

imperfections and flaws of the speaker's lover. He explains that

although his mistress is imperfect, he finds his love special and

'rare.' He talks about her eyes being nothing like the sun, her

lips not red as coral,her breasts not up to his standards, her

cheeks being pale, and the fact that he likes music better then her

voice. He even rudely talks about how her hair is like wires and

her breath is bad. Although he points out all these things about

his love, he still loves to hear her talk and considers his love

rare and special.