On Sale: Custom laser-cut stencil kits start at $19.95 + shipping
You could paint a rainbow stencil with more colors, but this one is bright enough with red, yellow, green and blue. Fluffy clouds at either end tie down the ends.
The bridged layers are specially made so that they won't fall apart or lose 'islands' when you cut them.
Cut out and paint your five-layer stencil of Rainbow. Decide whether you will use the natural surface color as one of your layers. For example, if your surface color is close to the color whitesmoke , then you may choose to omit the first layer since the surface has this color already. Download the free cut files to cut this stencil of Rainbow yourself. Or upload your own image to turn it into a stencil.