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I'm trying to renovate the front yard, and I'd like to recolor the curbing while I'm doing the porch and columns.

The landscaping curbing on the property may 10+ years old. I am pretty sure the concrete was dyed during the install. It looks like it is faded in some areas. Someone may have already painted it in the past because it looks like it matches the color of the front porch. What type of product options do I have for a project like this? What are the pros/cons?