I am making a clock.
I wanted to make a background image of the clock like rainbow color by only JavaScript.
I used this JavaScript code:
- control a direction with "circle at 80 % 70 %".
- choose color like "green" above.
- size the color to be big or small like "green 5 %".
- add " transparent " to make the color stronger or weaker with " % " like "transparent 100%".
The result will be like this :

