There are a couple closed-system paintbar studies out there that I like to occasionally look at, but I've always hated that they didn't have an option for coloring the Border of the candle. And since they're closed, I couldn't add the one line of code I needed to add in order to paint a border.
So I decided to write an indicator that forces a candle outline color. You can apply it to your chart after the paintbar study, and it will outline the candle with whatever color you choose.