I would go with black ones and beef-up posts.

or wooden

I really like those. The black looks great in the pic but the roof is a dark brown I know you can’t hardly tell from the pic. Do you think it would still be ok? I was thinking that also.

I think it would be ok. May be charcoal gray would not be so contrasting.

The house is great as is. The landscaping is non-existant. Put in a bunch of pink-flowering shrubs.

With lush landscape

I really like the look of white shutters and wider pillars with your house. Definitely landscaping can be beefed up too. You have a very cute house to work with!

The house looks so nice ,, it needs a porch , change the door to French door type ,, and add some character or some kind of design to the windows ,, with landscape. The exterior will look amazing ,,