Hi I reply to myself, after using the Chat with Peter (Thanx Peter 😉 )…

The problem was just that the component was not already loaded.

in the codepen, I just have to add addColorScheme in window.onload :

window.onload = () => {
oChart3.addColorScheme(‘custom’, aCustomColors);
oChart3.colorScheme = ‘custom’;

On my project, I was using the code in document.ready() : and it didn’t work.

I replaced document.ready() with window.onload = (), and it works fine now.