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.
You're going to get a LOT of responses for this. As far as I know and have read (and experienced first-hand), chalk paint is. any kind of paint that has an additive mixed into it to give it a gritty, matte finish and easy drying time. Many people use it because many times it negates the need for sanding a apiece and the finish allows for an easy time if you want to distress the wood.