Selling black roses

Yellow, blue, or even red,
But the best of them is black,
I am the seller of dread,
Love and piece is what I lack.

Black roses for all you people,
Black like my mind and heart,
All the pain has left me crippled,
With black roses i filled my cart.

You are those that grew them,
So beautiful and black,
You have no one else to blame,
So take them now and pay me back...