Booking A/B Tests Ghost Buttons, But Their Hopes Fade Away As Predicted
Ghosts buttons. We know that this style of buttons is net negative based on this evidence-based pattern. So when Booking ran this experiment, it's no surpirse that it was eventually rejected - a predictable replication.
Highlighted UI Changes From This Leak
The control version uses high contrast blue background buttons, whereas the variation has white background buttons with a thin blue border (ghosts).