I used the AR350 to cover stepping stones that were getting dirty and moldy. I added color to the mix, this was a very easy process. After power washing and letting dry 24 hours, I applied the first coat which immediately soaked in and darkened the stones a little, the color did not show very much, the stones being very porous. On day 2, I applied the second coat, it still soaked in but this time the color showed. It's very easy to apply, to avoid cleaning, I wore gloves and used a cheap brush, I made sure I worked over a tarp. The cleaning product recommended Xylene is a very strong product and I did not want to use it. The chemical smell stayed a few days. One of the photos shows the color on top of the stones, the sides not being painted show the previous color.