You go to flipanim https://flipanim.com/ then, you draw some colors, download it, put the file on beta editor, https://flipanim.com/beta then zoom in then it's gradient.

Click on the zoom in button. This is how it looks like.

And also when you download it, click settings, then the download button that has the red down arrow, go to beta editor, click settings, click on settings and click on the button with the green arrow, and put the downloaded file on beta editor, then zoom in.