Hmmm... I can see why you are considering the black, too. From the curb, the white works, but on the porch the black does. At this point, I would throw my hands in air and go with the plants!
This is fun for me. Porch furniture is another non-existant item here. I've seen some, but it's usually rolling along out in a pasture spooking the cattle until it finally gets stuck in some draw, sadly mangled.