How can I override ColorUI class of ColorEditor class and add a new Tab with custom colors?

Question

Hi!!!

What I am trying to do is to add a custom tab with custom colors into the ColorUI class of ColorEditor class which appears into the PropertyGrid of controls.

Something like this: ( Just a fake image made in Photoshop ).

I understand that in some way I have to create my own ColorEditor class and override the ColorUI class which is nested inside original ColorEditor class but I don't know which method I have to override so to add this extra Tab etc.

Any idea?

Thank you for your time!!!