Zactly.
Good art should match your personality.
Therefore, I say, you should hang a scary clown picture on the wall. 
Green & purple can be a lovely combination & brings to my mind the previous turn of the century–art nouveau decadence & all that.
Perhaps something inspired by absinthe, The Green Fairy? Look, violet-flavored absinthe!
And some posters…
I second The Joker.