Garden Pests and Diseases: blackened leaves/stems on burgundy Okra Plant, 0 by nataraj

nataraj wrote:
Hi,

I'm growing burgandy Okra. I've never grown okra before and I'm a bit color blind. My plants are developing a black (or maybe it's a burgandy) coloring from the place where the leaves attach to the stem outward and down the stem. I don't know if this is a fungus, mold or other disease or if it is normal, but it's beggining to look pretty diseaselike.

See attached photo. The upper right leaf has just a tiny bit near the stem, the lower right one has much more moving out the leaf, including the leaf veins (mostly the central vein) and down the stem.

Any help with identifying this is appreciated.