I spray painted the whole thing turquoise, using two coats of paint. I also did the sides and back.
I had some number stencils, so I did my second block with our address.
I carefully removed the paper stencils and then sprayed the whole thing with clear varnish. I added some plants and they were all done! You can see more on my blog at HomeontheCorner.com.
To see more: https://homeonthecorner.com/2016/03/07/springtime-concrete-painted-planter/