This is genius! Write the name of the paint color and swatch number and date painted on painter's tape on back of lightswitch for each room you paint and even add a swatch of the paint so you can match it if needed
Chalk paint recipe (2 Tablespoons plaster of paris, 2 Cups paint, 2 Tablespoons of water) - according to the author. Will be worth a try since chalk paint is so expensive. If you have tried this - please let me know.