https://codepen.io/knyttneve/pen/BayJEqr
https://angrytools.com/gradient/
https://sarcadass.github.io/granim.js/examples.html
https://codepen.io/bennettfeely/pen/xxEMQxa
https://www.grabient.com/
https://codepen.io/koenigsegg1/pen/vZjpgv
https://codepen.io/supah/pen/awmZJq
