How to change the blue top bar design in Sharepoint Online

[Nima-DE]

I would like to change the Microsoft defined Blue color in SPO, or at least add a new color. But I can't find an option for this.
Is it possible to do this with SPO Powershell?

I mean this Blue color:

I can define only one color in Admin Center:

Thanks

[#2]

Hello @Nima-DE 

you can add your own colors with a custom theme:

https://docs.microsoft.com/en-us/sharepoint/dev/declarative-customization/site-theming/sharepoint-si...

Regards, Dave