We've made 100 circles in a wide range of colors. They are on PNG backgrounds, which means that you can place them anywhere. You can see how we've placed four of the circles on very different backgrounds. Our circles can be reduced in size or kept as they are and they are extremely versatile and have many uses. You can see the colors we've used.
Each circle is 12" x 12" and their resolution is 300 DPI which is what's needed for professional printing results.
Commercial use is fine as long as they are used in a design and are not re-sold "as is".
The papers are in a zip file so make sure you have the image editing software to use them.