How Button Color Contrast Guides Users to Action (anthony)

Have you ever clicked a wrong button by accident? Users make wrong decisions on modal windows when they’re not guided in the right direction. Many modals prompt users to act without making the different actions clear. Clear color contrast between different buttons is what guides users to choose the right one. Not seeing a clear action to take causes uncertainty in users and slows down their task. It may even cause them to choose the wrong action that derails their task. (uxmovement.com)