The graceful columns of Greek Temples found their way into our residences in the Renaissance. We no longer adhere to the Greek orders, but I noticed that there are so many variations of this simple design feature of a home. When inspecting a small apartment complex, I saw that the porch was held up with a metal pole, visually unappealing. It occurred to me that a more dramatic column feature could be built around these poles to create a nicer exterior. With that thought, I realized that a homeowner could change out their columns to change the look of a home, or they could add a feature to make the column arrangement stand out more.
Driving through my neighborhood, I saw these variations on columns. The basic version seen on most homes is a circular type. In the first photo, you will see that this is not a simple tube. The Greeks discovered that a slight widening was needed to make the column more appealing.
You could add elements to your columns for visual appeal. Trim work at the base and top could be simple to add while giving visual appeal. This trim may not be seen from the street, but visitors will be drawn to these elements. Your trim is probably plain, but looking at different trim pieces in the hardware store that are meant for interiors, I see some good options for these columns.