This is a small feature idea,

I love the customisability you have on your app, allowing the us users to change the primary color of the booking form but what I would like to propose is allowing us to change the background color. It looks like you use shadCN UI and I think this feature would be easy to implement because of that. Just be able to change the foreground (text) and the background color would give us way more customisability to the form. Maybe even adding custom CSS but changing the background is the main thing I would want right now.