RainbowMaker

RainbowMaker is a simple and very easy to use Mac OS X application which will allow you to easily add real rainbows to your digital photos. · Various rainbow style - "Primary rainbow", "Primary And Secondary Rainbows" , "Rainbow 22°Halo" , "Rainbow 22° And 46° Halo" , "Glowing clouds" and "Broken specter" · Flexible rainbow settings including position, diameter, brightness, saturation, alpha and so on. · Save image after editing.