Try changing the foregound and background colors of the program.
You can also try reducing the delay/pause period to speed up the rotating effect.
There are loads of interesting effects you can make with NeoPixels, so take a look at Lady Ada's NeoPixel Über Guide
About the Author
If you have found this lesson useful, and want to learn Python, then you might like my book Programming the BBC micro:bit: Getting Started with MicroPython.
