Guest Selection - Template layout and interface (colorful poses)

Is it possible to have the colorful layout and pose options shown to guests customizable, or can they be displayed in a more minimal and professional style?

Personally, I find the default colorful options a bit less aesthetic and not fully aligned with the look I’m aiming for with my brand. Espicially

when your design is already colorful.

It would be great if they could be grey or just plain black and white.

Thanks for your attention.