I am old enough to remember “vintage”. When these were being installed in homes, we used to laugh because “custom” meant "are you doing white or black or white with gold specks wrought iron railings?"
Time to go…wasn’t good then and isn’t good now.
How about something with a hint at mid-century, with this rail and newel cap, but still traditional enough to meld with your dining furniture and rug.
In your case I would paint the railing and newel post/cap black.
Q
Mixed materials - wood railing, metal balusters
Q