Is this possible whitelabel or not?
What exactly do you mean?
Can you get it with your own label/icon if you purchase for a licence? If you have an web agency for example it would be nice, not?
Kirby doesn’t come with an icon/own label anywhere? In the frontend, it’s all yours anyway, and the Panel you can also customize.
Of course, you must not remove any copyright stuff from the Kirby source code etc.