With slight magnification a green rim on the top limb of the solar disk can be seen on most clear-day sunsets. However the flash or ray effects require a stronger layering of the atmosphere and a mirage which serves to magnify the green for a fraction of a second to a couple of seconds.
Rust-OleumÂ® Specialty Chalk Board Spray converts surfaces into a usable chalkboard. Apply to metal, wood, plastic, hardboard, glass or paperboard. Erases cleanly. Indoor use only. Cleans with soap and water.
And theyâre reusable. How to mix your own chalkboard paint: Buy your favorite color of latex paint, Martin says (she used a no-VOC variety). Buy unsanded grout ($3 from a hardware store). For a gallon of paint, mix in a quart of grout. (The ratio should be two-thirds paint to one-third grout.) Stir. Add drops of water to make it thinner.