Identification: Vine with purple leaves and stems, clusters of flowers

I was asked to identify this, and can't find it anywhere. Can you help?

 

Might be Basella alba, Malabar Spinach.

 

I did a search on that before I posted, but didn't come up with any varieties that have the deep purple leaves. Stems, yes, but not the leaves.

 

I agree its malabar spinach, purple leaves are probably caused by inadequate light or a phosphorous deficiency

 

Thanks, everyone, for your help!