Are you keeping the existing step railing? If so, I like white.

How big do those two shrubs flanking the front window grow? They look too close to the house and may soon be too large for the space.

Black for sure for the railing

I'd say no railing or at least no additional railing, as it would make it awkward to get from one side of the yard to the other.

If you need a railing, I would go with black, maybe even old school with the black metal cast iron or aluminum stuff. I had that at my last house with a similar porch and steps. I thought it looked great although it is hard to come by nowdays, even if it was practically ubiquitous 50 years ago. It's not that white is terrible but I think black looks classier.

Here's some examples from a vendor. You can sometimes find good examples in the deck railing department of your local big box home hardware or lawn and garden place . . . like Menards for example, that's my local go to.

https://newmanironworks.com/exterior-railings/

Thank you, all! Appreciate your ideas so much!