But the pods aren't purple

The one giant bean plant by the gate has pods that aren't purple and never have been purple. They start out pale green and then, when they turn papery, they're a greenish-white color. The seeds, though, do look like those of dolichos lablab, although perhaps smaller. This is the plant whose blossoms emit a cloying scent that can be smelled quite a distance away. The plants that produced purple pods did not have flowers that smelled this strong. Those producing purple pods all seem to be done with blooming, at least for the time being, but this giant sprawler is still producing flowers like crazy.